other variable names, t_float to t_sample change, array access 64 bit

svn path=/trunk/externals/iemlib/; revision=16193

16 files changed, 672 insertions, 476 deletions

diff --git a/iemlib1/src/biquad_freq_resp.c b/iemlib1/src/biquad_freq_resp.c
index 4fe9d31..aaadfac 100644
--- a/iemlib1/src/biquad_freq_resp.c
+++ b/iemlib1/src/biquad_freq_resp.c
@@ -1,7 +1,7 @@
 /* For information on usage and redistribution, and for a DISCLAIMER OF ALL
 * WARRANTIES, see the file, "LICENSE.txt," in this distribution.
 
-iemlib1 written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2006 */
+iemlib1 written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2011 */
 
 
 #include "m_pd.h"
@@ -21,33 +21,39 @@ typedef struct _biquad_freq_resp
   t_float   b2;
   t_outlet  *x_out_re;
   t_outlet  *x_out_im;
+  t_outlet  *x_out_abs;
+  t_outlet  *x_out_arg;
 } t_biquad_freq_resp;
 
 static t_class *biquad_freq_resp_class;
 
 static void biquad_freq_resp_float(t_biquad_freq_resp *x, t_floatarg freq_phase)
 {
-  t_float re1, im1, re2, im2;
-  t_float c, s, a;
-  t_float pi = 4.0f * atan(1.0f);
+  t_float re1, im1, re2, im2, re, im;
+  t_float c, s, ra;
+  t_float pi = 4.0 * atan(1.0);
   
-  if(freq_phase < 0.0f)
-    freq_phase = 0.0f;
-  else if(freq_phase > 180.0f)
+  if(freq_phase < 0.0)
+    freq_phase = 0.0;
+  else if(freq_phase > 180.0)
     freq_phase = 180.0;
   freq_phase *= pi;
-  freq_phase /= 180.0f;
+  freq_phase /= 180.0;
   
   c = cos(freq_phase);
   s = sin(freq_phase);
   
   re1 = x->a0 + x->a1*c + x->a2*(c*c - s*s);
-  im1 = x->a1*s + x->a2*2.0f*(s*c);
-  re2 = 1.0f - x->b1*c - x->b2*(c*c - s*s);
-  im2 = -x->b1*s - x->b2*2.0f*(s*c);
-  a = re2*re2 + im2*im2;
-  outlet_float(x->x_out_im, (re1*im2 - re2*im1)/a);/* because z^-1 = e^-jwt, negative sign */
-  outlet_float(x->x_out_re, (re1*re2 + im1*im2)/a);
+  im1 = x->a1*s + x->a2*2.0*(s*c);
+  re2 = 1.0 - x->b1*c - x->b2*(c*c - s*s);
+  im2 = -x->b1*s - x->b2*2.0*(s*c);
+  ra = 1.0 / (re2*re2 + im2*im2);
+  im = (re1*im2 - re2*im1) * ra; /* because z^-1 = e^-jwt, negative sign */
+  re = (re1*re2 + im1*im2) * ra;
+  outlet_float(x->x_out_arg, 180.0*atan2(im, re)/pi);
+  outlet_float(x->x_out_abs, sqrt(re*re + im*im));
+  outlet_float(x->x_out_im, im);
+  outlet_float(x->x_out_re, re);
   
 }
 /* y/x = (a0 + a1*z-1 + a2*z-2)/(1 - b1*z-1 - b2*z-2);*/
@@ -69,11 +75,13 @@ static void *biquad_freq_resp_new(void)
   t_biquad_freq_resp *x = (t_biquad_freq_resp *)pd_new(biquad_freq_resp_class);
   x->x_out_re = outlet_new(&x->x_obj, &s_float);
   x->x_out_im = outlet_new(&x->x_obj, &s_float);
-  x->b1 = 0.0f;
-  x->b2 = 0.0f;
-  x->a0 = 0.0f;
-  x->a1 = 0.0f;
-  x->a2 = 0.0f;
+  x->x_out_abs = outlet_new(&x->x_obj, &s_float);
+  x->x_out_arg = outlet_new(&x->x_obj, &s_float);
+  x->b1 = 0.0;
+  x->b2 = 0.0;
+  x->a0 = 0.0;
+  x->a1 = 0.0;
+  x->a2 = 0.0;
   return (x);
 }
 
diff --git a/iemlib1/src/iem_cot4~.c b/iemlib1/src/iem_cot4~.c
index 4c9c811..70de93f 100644
--- a/iemlib1/src/iem_cot4~.c
+++ b/iemlib1/src/iem_cot4~.c
@@ -164,5 +164,4 @@ void iem_cot4_tilde_setup(void)
   CLASS_MAINSIGNALIN(iem_cot4_tilde_class, t_iem_cot4_tilde, x_float_sig_in);
   class_addmethod(iem_cot4_tilde_class, (t_method)iem_cot4_tilde_dsp, gensym("dsp"), 0);
   iem_cot4_tilde_maketable();
-//  class_sethelpsymbol(iem_cot4_tilde_class, gensym("iemhelp/help-iem_cot4~"));
 }
diff --git a/iemlib1/src/iem_pow4~.c b/iemlib1/src/iem_pow4~.c
index 38dfbad..a34a490 100644
--- a/iemlib1/src/iem_pow4~.c
+++ b/iemlib1/src/iem_pow4~.c
@@ -1,7 +1,7 @@
 /* For information on usage and redistribution, and for a DISCLAIMER OF ALL
 * WARRANTIES, see the file, "LICENSE.txt," in this distribution.
 
-iemlib1 written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2006 */
+iemlib1 written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2012 */
 
 #include "m_pd.h"
 #include "iemlib.h"
@@ -14,37 +14,49 @@ static t_class *iem_pow4_tilde_class;
 typedef struct _iem_pow4_tilde
 {
   t_object  x_obj;
-  t_float   x_exp;
+  t_sample  x_exp;
   t_float   x_float_sig_in;
 } t_iem_pow4_tilde;
 
 static void iem_pow4_tilde_ft1(t_iem_pow4_tilde *x, t_floatarg f)
 {
-  x->x_exp = f;
+  x->x_exp = (t_sample)f;
 }
 
 static t_int *iem_pow4_tilde_perform(t_int *w)
 {
-  t_float *in = (t_float *)(w[1]);
-  t_float *out = (t_float *)(w[2]);
+  t_sample *in = (t_sample *)(w[1]);
+  t_sample *out = (t_sample *)(w[2]);
   t_iem_pow4_tilde *x = (t_iem_pow4_tilde *)(w[3]);
-  t_float y=x->x_exp;
-  t_float f, g;
+  t_sample exp=x->x_exp;
+  t_sample f, g;
   int n = (int)(w[4])/4;
   
   while (n--)
   {
-    f = *in;
-    if(f < 0.01f)
-      f = 0.01f;
-    else if(f > 1000.0f)
-      f = 1000.0f;
-    g = log(f);
-    f = exp(g*y);
-    *out++ = f;
-    *out++ = f;
-    *out++ = f;
-    *out++ = f;
+    f = (t_sample)(*in);
+    if(f > 0.0)
+    {
+      g = log(f);
+      f = exp(g * exp);
+      *out++ = f;
+      *out++ = f;
+      *out++ = f;
+      *out++ = f;
+      
+      /*g = pow(f, exp);
+      *out++ = g;
+      *out++ = g;
+      *out++ = g;
+      *out++ = g;*/
+    }
+    else
+    {
+      *out++ = 0.0;
+      *out++ = 0.0;
+      *out++ = 0.0;
+      *out++ = 0.0;
+    }
     in += 4;
   }
   return (w+5);
@@ -59,10 +71,10 @@ static void *iem_pow4_tilde_new(t_floatarg f)
 {
   t_iem_pow4_tilde *x = (t_iem_pow4_tilde *)pd_new(iem_pow4_tilde_class);
   
-  x->x_exp = f;
+  x->x_exp = (t_sample)f;
   inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ft1"));
   outlet_new(&x->x_obj, gensym("signal"));
-  x->x_float_sig_in = 0.0f;
+  x->x_float_sig_in = 0.0;
   return (x);
 }
 
@@ -70,9 +82,7 @@ void iem_pow4_tilde_setup(void)
 {
   iem_pow4_tilde_class = class_new(gensym("iem_pow4~"), (t_newmethod)iem_pow4_tilde_new, 0,
     sizeof(t_iem_pow4_tilde), 0, A_DEFFLOAT, 0);
-  class_addcreator((t_newmethod)iem_pow4_tilde_new, gensym("icot~"), 0);
   CLASS_MAINSIGNALIN(iem_pow4_tilde_class, t_iem_pow4_tilde, x_float_sig_in);
   class_addmethod(iem_pow4_tilde_class, (t_method)iem_pow4_tilde_dsp, gensym("dsp"), 0);
   class_addmethod(iem_pow4_tilde_class, (t_method)iem_pow4_tilde_ft1, gensym("ft1"), A_FLOAT, 0);
-//  class_sethelpsymbol(iem_pow4_tilde_class, gensym("iemhelp/help-iem_pow4~"));
 }
diff --git a/iemlib1/src/iem_sqrt4~.c b/iemlib1/src/iem_sqrt4~.c
index f721b20..0b4049d 100644
--- a/iemlib1/src/iem_sqrt4~.c
+++ b/iemlib1/src/iem_sqrt4~.c
@@ -1,7 +1,7 @@
 /* For information on usage and redistribution, and for a DISCLAIMER OF ALL
 * WARRANTIES, see the file, "LICENSE.txt," in this distribution.
 
-iemlib1 written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2006 */
+iemlib1 written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2012 */
 
 #include "m_pd.h"
 #include "iemlib.h"
@@ -12,40 +12,40 @@ iemlib1 written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2006
 
 /* ------------------------ iem_sqrt4~ ----------------------------- */
 
-static t_float *iem_sqrt4_tilde_exptab=(t_float *)0L;
-static t_float *iem_sqrt4_tilde_mantissatab=(t_float *)0L;
+static t_float iem_rsqrt4_tilde_exptab[IEMSQRT4TAB1SIZE];
+static t_float iem_rsqrt4_tilde_mantissatab[IEMSQRT4TAB2SIZE];
 
 static t_class *iem_sqrt4_tilde_class;
 
 typedef struct _iem_sqrt4_tilde
 {
   t_object  x_obj;
-  t_float   x_msi;
+  t_float   x_float_sig_in;
 } t_iem_sqrt4_tilde;
 
 static t_int *iem_sqrt4_tilde_perform(t_int *w)
 {
-  t_float *in = (t_float *)(w[1]);
-  t_float *out = (t_float *)(w[2]);
+  t_sample *in = (t_sample *)(w[1]);
+  t_sample *out = (t_sample *)(w[2]);
   t_int n = (t_int)(w[3])/4;
   
   while(n--)
   {
-    t_float f = *in;
-    t_float g, h;
+    t_sample f = *in;
+    t_sample g, h;
     union tabfudge_f tf;
     
-    if(f < 0.0f)
+    if(f <= 0.0)
     {
-      *out++ = 0.0f;
-      *out++ = 0.0f;
-      *out++ = 0.0f;
-      *out++ = 0.0f;
+      *out++ = 0.0;
+      *out++ = 0.0;
+      *out++ = 0.0;
+      *out++ = 0.0;
     }
     else
     {
       tf.tf_f = f;
-      g = iem_sqrt4_tilde_exptab[((tf.tf_l) >> 23) & 0xff] * iem_sqrt4_tilde_mantissatab[((tf.tf_l) >> 13) & 0x3ff];
+      g = iem_rsqrt4_tilde_exptab[((tf.tf_l) >> 23) & 0xff] * iem_rsqrt4_tilde_mantissatab[((tf.tf_l) >> 13) & 0x3ff];
       h = f * (1.5f * g - 0.5f * g * g * g * f);
       *out++ = h;
       *out++ = h;
@@ -62,29 +62,21 @@ static void iem_sqrt4_tilde_dsp(t_iem_sqrt4_tilde *x, t_signal **sp)
   dsp_add(iem_sqrt4_tilde_perform, 3, sp[0]->s_vec, sp[1]->s_vec, sp[0]->s_n);
 }
 
-static void iem_sqrt4_tilde_maketable(void)
+static void iem_sqrt4_tilde_init(void)
 {
   int i;
   t_float f;
   union tabfudge_f tf;
   
-  if(!iem_sqrt4_tilde_exptab)
+  for(i=0; i<IEMSQRT4TAB1SIZE; i++)
   {
-    iem_sqrt4_tilde_exptab = (t_float *)getbytes(sizeof(t_float) * IEMSQRT4TAB1SIZE);
-    for(i=0; i<IEMSQRT4TAB1SIZE; i++)
-    {
-      tf.tf_l = (i ? (i == IEMSQRT4TAB1SIZE-1 ? IEMSQRT4TAB1SIZE-2 : i) : 1)<< 23;
-      iem_sqrt4_tilde_exptab[i] = 1.0f/sqrt(tf.tf_f); 
-    }
+    tf.tf_l = (i ? (i == IEMSQRT4TAB1SIZE-1 ? IEMSQRT4TAB1SIZE-2 : i) : 1)<< 23;
+    iem_rsqrt4_tilde_exptab[i] = 1.0/sqrt(tf.tf_f); 
   }
-  if(!iem_sqrt4_tilde_mantissatab)
+  for(i=0; i<IEMSQRT4TAB2SIZE; i++)
   {
-    iem_sqrt4_tilde_mantissatab = (t_float *)getbytes(sizeof(t_float) * IEMSQRT4TAB2SIZE);
-    for(i=0; i<IEMSQRT4TAB2SIZE; i++)
-    {
-      f = 1.0f + (1.0f/(t_float)IEMSQRT4TAB2SIZE) * (t_float)i;
-      iem_sqrt4_tilde_mantissatab[i] = 1.0f/sqrt(f);  
-    }
+    f = 1.0 + (1.0/(t_float)IEMSQRT4TAB2SIZE) * (t_float)i;
+    iem_rsqrt4_tilde_mantissatab[i] = 1.0/sqrt(f);  
   }
 }
 
@@ -93,16 +85,15 @@ static void *iem_sqrt4_tilde_new(void)
   t_iem_sqrt4_tilde *x = (t_iem_sqrt4_tilde *)pd_new(iem_sqrt4_tilde_class);
   
   outlet_new(&x->x_obj, gensym("signal"));
-  x->x_msi = 0;
+  x->x_float_sig_in = 0;
   return (x);
 }
 
 void iem_sqrt4_tilde_setup(void)
 {
+  iem_sqrt4_tilde_init();
   iem_sqrt4_tilde_class = class_new(gensym("iem_sqrt4~"), (t_newmethod)iem_sqrt4_tilde_new, 0,
     sizeof(t_iem_sqrt4_tilde), 0, 0);
-  CLASS_MAINSIGNALIN(iem_sqrt4_tilde_class, t_iem_sqrt4_tilde, x_msi);
+  CLASS_MAINSIGNALIN(iem_sqrt4_tilde_class, t_iem_sqrt4_tilde, x_float_sig_in);
   class_addmethod(iem_sqrt4_tilde_class, (t_method)iem_sqrt4_tilde_dsp, gensym("dsp"), 0);
-  iem_sqrt4_tilde_maketable();
-//  class_sethelpsymbol(iem_sqrt4_tilde_class, gensym("iemhelp/help-iem_sqrt4~"));
 }
diff --git a/iemlib1/src/lp1_t~.c b/iemlib1/src/lp1_t~.c
index 251cfe7..1444e21 100644
--- a/iemlib1/src/lp1_t~.c
+++ b/iemlib1/src/lp1_t~.c
@@ -54,8 +54,8 @@ static void lp1_t_tilde_dsp_tick(t_lp1_t_tilde *x)
 
 static t_int *lp1_t_tilde_perform(t_int *w)
 {
-  t_float *in = (t_float *)(w[1]);
-  t_float *out = (t_float *)(w[2]);
+  t_sample *in = (t_sample *)(w[1]);
+  t_sample *out = (t_sample *)(w[2]);
   t_lp1_t_tilde *x = (t_lp1_t_tilde *)(w[3]);
   int i, n = (t_int)(w[4]);
   double yn0, yn1=x->yn1;
@@ -65,7 +65,7 @@ static t_int *lp1_t_tilde_perform(t_int *w)
   for(i=0; i<n; i++)
   {
     yn0 = (double)(*in++)*c0 + yn1*c1;
-    *out++ = (t_float)yn0;
+    *out++ = (t_sample)yn0;
     yn1 = yn0;
   }
   /* NAN protect */
@@ -77,8 +77,8 @@ static t_int *lp1_t_tilde_perform(t_int *w)
 
 static t_int *lp1_t_tilde_perf8(t_int *w)
 {
-  t_float *in = (t_float *)(w[1]);
-  t_float *out = (t_float *)(w[2]);
+  t_sample *in = (t_sample *)(w[1]);
+  t_sample *out = (t_sample *)(w[2]);
   t_lp1_t_tilde *x = (t_lp1_t_tilde *)(w[3]);
   int i, n = (t_int)(w[4]);
   double ynn[9];
@@ -89,21 +89,21 @@ static t_int *lp1_t_tilde_perf8(t_int *w)
   for(i=0; i<n; i+=8, in+=8, out+=8)
   {
     ynn[1] = (double)in[0]*c0 + ynn[0]*c1;
-    out[0] = (t_float)ynn[1];
+    out[0] = (t_sample)ynn[1];
     ynn[2] = (double)in[1]*c0 + ynn[1]*c1;
-    out[1] = (t_float)ynn[2];
+    out[1] = (t_sample)ynn[2];
     ynn[3] = (double)in[2]*c0 + ynn[2]*c1;
-    out[2] = (t_float)ynn[3];
+    out[2] = (t_sample)ynn[3];
     ynn[4] = (double)in[3]*c0 + ynn[3]*c1;
-    out[3] = (t_float)ynn[4];
+    out[3] = (t_sample)ynn[4];
     ynn[5] = (double)in[4]*c0 + ynn[4]*c1;
-    out[4] = (t_float)ynn[5];
+    out[4] = (t_sample)ynn[5];
     ynn[6] = (double)in[5]*c0 + ynn[5]*c1;
-    out[5] = (t_float)ynn[6];
+    out[5] = (t_sample)ynn[6];
     ynn[7] = (double)in[6]*c0 + ynn[6]*c1;
-    out[6] = (t_float)ynn[7];
+    out[6] = (t_sample)ynn[7];
     ynn[8] = (double)in[7]*c0 + ynn[7]*c1;
-    out[7] = (t_float)ynn[8];
+    out[7] = (t_sample)ynn[8];
     ynn[0] = ynn[8];
   }
   /* NAN protect */
@@ -122,15 +122,15 @@ static void lp1_t_tilde_ft2(t_lp1_t_tilde *x, t_floatarg interpol)
   if(i <= 0)
     i = 1;
   x->ticks = i;
-  x->rcp_ticks = 1.0f / (t_float)i;
+  x->rcp_ticks = 1.0 / (t_float)i;
 }
 
 static void lp1_t_tilde_ft1(t_lp1_t_tilde *x, t_floatarg f_time_const)
 {
   double d_time_const;
   
-  if(f_time_const < 0.0f)
-    f_time_const = 0.0f;
+  if(f_time_const < 0.0)
+    f_time_const = 0.0;
   d_time_const = (double)f_time_const;
   if(d_time_const != x->cur_t)
   {
@@ -150,12 +150,12 @@ static void lp1_t_tilde_dsp(t_lp1_t_tilde *x, t_signal **sp)
   int i, n=(int)sp[0]->s_n;
   
   x->sr = -1000.0 / (double)(sp[0]->s_sr);
-  x->ticks_per_interpol_time = 0.001f * (t_float)(sp[0]->s_sr) / (t_float)n;
+  x->ticks_per_interpol_time = 0.001 * (t_float)(sp[0]->s_sr) / (t_float)n;
   i = (int)((x->ticks_per_interpol_time)*(x->interpol_time));
   if(i <= 0)
     i = 1;
   x->ticks = i;
-  x->rcp_ticks = 1.0f / (t_float)i;
+  x->rcp_ticks = 1.0 / (t_float)i;
   if(x->cur_t == 0.0)
     x->c1 = 0.0;
   else
@@ -171,16 +171,16 @@ static void *lp1_t_tilde_new(t_symbol *s, int argc, t_atom *argv)
 {
   t_lp1_t_tilde *x = (t_lp1_t_tilde *)pd_new(lp1_t_tilde_class);
   int i;
-  t_float interpol=0.0f;
+  t_float interpol=0.0;
   double time_const=0.0;
   
   inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ft1"));
   inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ft2"));
   outlet_new(&x->x_obj, &s_signal);
-  x->x_float_sig_in = 0.0f;
+  x->x_float_sig_in = 0.0;
   x->counter_t = 1;
   x->delta_t = 0.0;
-  x->interpol_time = 0.0f;
+  x->interpol_time = 0.0;
   x->yn1 = 0.0;
   x->sr = -1.0 / 44.1;
   if((argc >= 1)&&IS_A_FLOAT(argv,0))
@@ -195,15 +195,15 @@ static void *lp1_t_tilde_new(t_symbol *s, int argc, t_atom *argv)
   else
     x->c1 = exp((x->sr)/time_const);
   x->c0 = 1.0 - x->c1;
-  if(interpol < 0.0f)
-    interpol = 0.0f;
+  if(interpol < 0.0)
+    interpol = 0.0;
   x->interpol_time = interpol;
-  x->ticks_per_interpol_time = 0.5f;
+  x->ticks_per_interpol_time = 0.5;
   i = (int)((x->ticks_per_interpol_time)*(x->interpol_time));
   if(i <= 0)
     i = 1;
   x->ticks = i;
-  x->rcp_ticks = 1.0f / (t_float)i;
+  x->rcp_ticks = 1.0 / (t_float)i;
   x->end_t = x->cur_t;
   return (x);
 }
diff --git a/iemlib1/src/mov_avrg_kern~.c b/iemlib1/src/mov_avrg_kern~.c
index dbd680f..20a6f85 100644
--- a/iemlib1/src/mov_avrg_kern~.c
+++ b/iemlib1/src/mov_avrg_kern~.c
@@ -26,9 +26,9 @@ static t_class *mov_avrg_kern_tilde_class;
 
 static t_int *mov_avrg_kern_tilde_perform(t_int *w)
 {
-  t_float *in_direct = (t_float *)(w[1]);
-  t_float *in_delayed = (t_float *)(w[2]);
-  t_float *out = (t_float *)(w[3]);
+  t_sample *in_direct = (t_sample *)(w[1]);
+  t_sample *in_delayed = (t_sample *)(w[2]);
+  t_sample *out = (t_sample *)(w[3]);
   t_mov_avrg_kern_tilde *x = (t_mov_avrg_kern_tilde *)(w[4]);
   int i, n = (int)(w[5]);
   double wn0, wn1=x->x_wn1, a0=x->x_a0;
@@ -43,7 +43,7 @@ static t_int *mov_avrg_kern_tilde_perform(t_int *w)
       for(i=0; i<n; i++)
       {
         wn0 = wn1 + a0*(double)(*in_direct++);
-        *out++ = (t_float)wn0;
+        *out++ = (t_sample)wn0;
         wn1 = wn0;
       }
     }
@@ -53,13 +53,13 @@ static t_int *mov_avrg_kern_tilde_perform(t_int *w)
       for(i=0; i<counter; i++)
       {
         wn0 = wn1 + a0*(double)(*in_direct++);
-        *out++ = (t_float)wn0;
+        *out++ = (t_sample)wn0;
         wn1 = wn0;
       }
       for(i=counter; i<n; i++)
       {
         wn0 = wn1 + a0*(double)(*in_direct++ - *in_delayed++);
-        *out++ = (t_float)wn0;
+        *out++ = (t_sample)wn0;
         wn1 = wn0;
       }
     }
@@ -69,7 +69,7 @@ static t_int *mov_avrg_kern_tilde_perform(t_int *w)
     for(i=0; i<n; i++)
     {
       wn0 = wn1 + a0*(double)(*in_direct++ - *in_delayed++);
-      *out++ = (t_float)wn0;
+      *out++ = (t_sample)wn0;
       wn1 = wn0;
     }
   }
@@ -120,7 +120,7 @@ static void *mov_avrg_kern_tilde_new(t_floatarg mstime)
   inlet_new(&x->x_obj,  &x->x_obj.ob_pd, &s_signal, &s_signal);
   inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ft1"));
   outlet_new(&x->x_obj, &s_signal);
-  x->x_float_sig_in = 0.0f;
+  x->x_float_sig_in = 0.0;
   return(x);
 }
 
diff --git a/iemlib1/src/para_bp2~.c b/iemlib1/src/para_bp2~.c
index ffeb41d..9ee17e8 100644
--- a/iemlib1/src/para_bp2~.c
+++ b/iemlib1/src/para_bp2~.c
@@ -51,12 +51,12 @@ static void para_bp2_tilde_calc(t_para_bp2_tilde *x)
   t_float l, al, gal, l2, rcp;
   
   l = x->cur_l;
-  l2 = l*l + 1.0f;
+  l2 = l*l + 1.0;
   al = l*x->cur_a;
   gal = al*x->cur_g;
-  rcp = 1.0f/(al + l2);
+  rcp = 1.0/(al + l2);
   x->a0 = rcp*(l2 + gal);
-  x->a1 = rcp*2.0f*(2.0f - l2);
+  x->a1 = rcp*2.0*(2.0 - l2);
   x->a2 = rcp*(l2 - gal);
   x->b1 = -x->a1;
   x->b2 = rcp*(al - l2);
@@ -84,10 +84,10 @@ static void para_bp2_tilde_dsp_tick(t_para_bp2_tilde *x)
         x->cur_f *= x->delta_f;
       }
       l = x->cur_f * x->sr;
-      if(l < 1.0e-20f)
-        x->cur_l = 1.0e20f;
-      else if(l > 1.57079632f)
-        x->cur_l = 0.0f;
+      if(l < 1.0e-20)
+        x->cur_l = 1.0e20;
+      else if(l > 1.57079632)
+        x->cur_l = 0.0;
       else
       {
         si = sin(l);
@@ -128,31 +128,31 @@ static void para_bp2_tilde_dsp_tick(t_para_bp2_tilde *x)
     
     /* stability check */
     
-    discriminant = x->b1 * x->b1 + 4.0f * x->b2;
-    if(x->b1 <= -1.9999996f)
-      x->b1 = -1.9999996f;
-    else if(x->b1 >= 1.9999996f)
-      x->b1 = 1.9999996f;
+    discriminant = x->b1 * x->b1 + 4.0 * x->b2;
+    if(x->b1 <= -1.9999996)
+      x->b1 = -1.9999996;
+    else if(x->b1 >= 1.9999996)
+      x->b1 = 1.9999996;
     
-    if(x->b2 <= -0.9999998f)
-      x->b2 = -0.9999998f;
-    else if(x->b2 >= 0.9999998f)
-      x->b2 = 0.9999998f;
+    if(x->b2 <= -0.9999998)
+      x->b2 = -0.9999998;
+    else if(x->b2 >= 0.9999998)
+      x->b2 = 0.9999998;
     
-    if(discriminant >= 0.0f)
+    if(discriminant >= 0.0)
     {
-      if(0.9999998f - x->b1 - x->b2 < 0.0f)
-        x->b2 = 0.9999998f - x->b1;
-      if(0.9999998f + x->b1 - x->b2 < 0.0f)
-        x->b2 = 0.9999998f + x->b1;
+      if(0.9999998 - x->b1 - x->b2 < 0.0)
+        x->b2 = 0.9999998 - x->b1;
+      if(0.9999998 + x->b1 - x->b2 < 0.0)
+        x->b2 = 0.9999998 + x->b1;
     }
   }
 }
 
 static t_int *para_bp2_tilde_perform(t_int *w)
 {
-  t_float *in = (t_float *)(w[1]);
-  t_float *out = (t_float *)(w[2]);
+  t_sample *in = (t_sample *)(w[1]);
+  t_sample *out = (t_sample *)(w[2]);
   t_para_bp2_tilde *x = (t_para_bp2_tilde *)(w[3]);
   int i, n = (t_int)(w[4]);
   t_float wn0, wn1=x->wn1, wn2=x->wn2;
@@ -162,16 +162,16 @@ static t_int *para_bp2_tilde_perform(t_int *w)
   para_bp2_tilde_dsp_tick(x);
   for(i=0; i<n; i++)
   {
-    wn0 = *in++ + b1*wn1 + b2*wn2;
-    *out++ = a0*wn0 + a1*wn1 + a2*wn2;
+    wn0 = (t_float)(*in++) + b1*wn1 + b2*wn2;
+    *out++ = (t_sample)(a0*wn0 + a1*wn1 + a2*wn2);
     wn2 = wn1;
     wn1 = wn0;
   }
   /* NAN protect */
   if(IEM_DENORMAL(wn2))
-    wn2 = 0.0f;
+    wn2 = 0.0;
   if(IEM_DENORMAL(wn1))
-    wn1 = 0.0f;
+    wn1 = 0.0;
   
   x->wn1 = wn1;
   x->wn2 = wn2;
@@ -190,8 +190,8 @@ y/x = (a0 + a1*z-1 + a2*z-2)/(1 - b1*z-1 - b2*z-2);*/
 
 static t_int *para_bp2_tilde_perf8(t_int *w)
 {
-  t_float *in = (t_float *)(w[1]);
-  t_float *out = (t_float *)(w[2]);
+  t_sample *in = (t_sample *)(w[1]);
+  t_sample *out = (t_sample *)(w[2]);
   t_para_bp2_tilde *x = (t_para_bp2_tilde *)(w[3]);
   int i, n = (t_int)(w[4]);
   t_float wn[10];
@@ -203,22 +203,22 @@ static t_int *para_bp2_tilde_perf8(t_int *w)
   wn[1] = x->wn1;
   for(i=0; i<n; i+=8, in+=8, out+=8)
   {
-    wn[2] = in[0] + b1*wn[1] + b2*wn[0];
-    out[0] = a0*wn[2] + a1*wn[1] + a2*wn[0];
-    wn[3] = in[1] + b1*wn[2] + b2*wn[1];
-    out[1] = a0*wn[3] + a1*wn[2] + a2*wn[1];
-    wn[4] = in[2] + b1*wn[3] + b2*wn[2];
-    out[2] = a0*wn[4] + a1*wn[3] + a2*wn[2];
-    wn[5] = in[3] + b1*wn[4] + b2*wn[3];
-    out[3] = a0*wn[5] + a1*wn[4] + a2*wn[3];
-    wn[6] = in[4] + b1*wn[5] + b2*wn[4];
-    out[4] = a0*wn[6] + a1*wn[5] + a2*wn[4];
-    wn[7] = in[5] + b1*wn[6] + b2*wn[5];
-    out[5] = a0*wn[7] + a1*wn[6] + a2*wn[5];
-    wn[8] = in[6] + b1*wn[7] + b2*wn[6];
-    out[6] = a0*wn[8] + a1*wn[7] + a2*wn[6];
-    wn[9] = in[7] + b1*wn[8] + b2*wn[7];
-    out[7] = a0*wn[9] + a1*wn[8] + a2*wn[7];
+    wn[2] = (t_float)in[0] + b1*wn[1] + b2*wn[0];
+    out[0] = (t_sample)(a0*wn[2] + a1*wn[1] + a2*wn[0]);
+    wn[3] = (t_float)in[1] + b1*wn[2] + b2*wn[1];
+    out[1] = (t_sample)(a0*wn[3] + a1*wn[2] + a2*wn[1]);
+    wn[4] = (t_float)in[2] + b1*wn[3] + b2*wn[2];
+    out[2] = (t_sample)(a0*wn[4] + a1*wn[3] + a2*wn[2]);
+    wn[5] = (t_float)in[3] + b1*wn[4] + b2*wn[3];
+    out[3] = (t_sample)(a0*wn[5] + a1*wn[4] + a2*wn[3]);
+    wn[6] = (t_float)in[4] + b1*wn[5] + b2*wn[4];
+    out[4] = (t_sample)(a0*wn[6] + a1*wn[5] + a2*wn[4]);
+    wn[7] = (t_float)in[5] + b1*wn[6] + b2*wn[5];
+    out[5] = (t_sample)(a0*wn[7] + a1*wn[6] + a2*wn[5]);
+    wn[8] = (t_float)in[6] + b1*wn[7] + b2*wn[6];
+    out[6] = (t_sample)(a0*wn[8] + a1*wn[7] + a2*wn[6]);
+    wn[9] = (t_float)in[7] + b1*wn[8] + b2*wn[7];
+    out[7] = (t_sample)(a0*wn[9] + a1*wn[8] + a2*wn[7]);
     wn[0] = wn[8];
     wn[1] = wn[9];
   }
@@ -261,9 +261,9 @@ static void para_bp2_tilde_ft2(t_para_bp2_tilde *x, t_floatarg q)
 {
   t_float a;
   
-  if(q <= 0.0f)
-    q = 0.000001f;
-  a = 1.0f/q;
+  if(q <= 0.0)
+    q = 0.000001;
+  a = 1.0/q;
   if(a != x->cur_a)
   {
     x->end_a = a;
@@ -275,8 +275,8 @@ static void para_bp2_tilde_ft2(t_para_bp2_tilde *x, t_floatarg q)
 
 static void para_bp2_tilde_ft1(t_para_bp2_tilde *x, t_floatarg f)
 {
-  if(f <= 0.0f)
-    f = 0.000001f;
+  if(f <= 0.0)
+    f = 0.000001;
   if(f != x->cur_f)
   {
     x->end_f = f;
@@ -311,18 +311,18 @@ static void para_bp2_tilde_dsp(t_para_bp2_tilde *x, t_signal **sp)
   t_float si, co, f;
   int i, n=(int)sp[0]->s_n;
   
-  x->sr = 3.14159265358979323846f / (t_float)(sp[0]->s_sr);
-  x->ticks_per_interpol_time = 0.001f * (t_float)(sp[0]->s_sr) / (t_float)n;
+  x->sr = 3.14159265358979323846 / (t_float)(sp[0]->s_sr);
+  x->ticks_per_interpol_time = 0.001 * (t_float)(sp[0]->s_sr) / (t_float)n;
   i = (int)((x->ticks_per_interpol_time)*(x->interpol_time));
   if(i <= 0)
     i = 1;
   x->ticks = i;
-  x->rcp_ticks = 1.0f / (t_float)i;
+  x->rcp_ticks = 1.0 / (t_float)i;
   f = x->cur_f * x->sr;
-  if(f < 1.0e-20f)
-    x->cur_l = 1.0e20f;
-  else if(f > 1.57079632f)
-    x->cur_l = 0.0f;
+  if(f < 1.0e-20)
+    x->cur_l = 1.0e20;
+  else if(f > 1.57079632)
+    x->cur_l = 0.0;
   else
   {
     si = sin(f);
@@ -339,7 +339,7 @@ static void *para_bp2_tilde_new(t_symbol *s, int argc, t_atom *argv)
 {
   t_para_bp2_tilde *x = (t_para_bp2_tilde *)pd_new(para_bp2_tilde_class);
   int i;
-  t_float si, co, f=0.0f, q=1.0f, l=0.0f, interpol=0.0f;
+  t_float si, co, f=0.0, q=1.0, l=0.0, interpol=0.0;
   
   inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ft1"));
   inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ft2"));
@@ -347,7 +347,7 @@ static void *para_bp2_tilde_new(t_symbol *s, int argc, t_atom *argv)
   inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ft4"));
   outlet_new(&x->x_obj, &s_signal);
   x->x_debug_outlet = outlet_new(&x->x_obj, &s_list);
-  x->x_float_sig_in = 0.0f;
+  x->x_float_sig_in = 0.0;
   
   x->x_at[0].a_type = A_FLOAT;
   x->x_at[1].a_type = A_FLOAT;
@@ -359,19 +359,19 @@ static void *para_bp2_tilde_new(t_symbol *s, int argc, t_atom *argv)
   x->counter_f = 1;
   x->counter_a = 0;
   x->counter_g = 0;
-  x->delta_f = 0.0f;
-  x->delta_a = 0.0f;
-  x->delta_g = 0.0f;
-  x->interpol_time = 500.0f;
-  x->wn1 = 0.0f;
-  x->wn2 = 0.0f;
-  x->a0 = 0.0f;
-  x->a1 = 0.0f;
-  x->a2 = 0.0f;
-  x->b1 = 0.0f;
-  x->b2 = 0.0f;
-  x->sr = 3.14159265358979323846f / 44100.0f;
-  x->cur_a = 1.0f;
+  x->delta_f = 0.0;
+  x->delta_a = 0.0;
+  x->delta_g = 0.0;
+  x->interpol_time = 500.0;
+  x->wn1 = 0.0;
+  x->wn2 = 0.0;
+  x->a0 = 0.0;
+  x->a1 = 0.0;
+  x->a2 = 0.0;
+  x->b1 = 0.0;
+  x->b2 = 0.0;
+  x->sr = 3.14159265358979323846 / 44100.0;
+  x->cur_a = 1.0;
   if((argc == 4)&&IS_A_FLOAT(argv,3)&&IS_A_FLOAT(argv,2)&&IS_A_FLOAT(argv,1)&&IS_A_FLOAT(argv,0))
   {
     f = (t_float)atom_getfloatarg(0, argc, argv);
@@ -379,33 +379,33 @@ static void *para_bp2_tilde_new(t_symbol *s, int argc, t_atom *argv)
     l = (t_float)atom_getfloatarg(2, argc, argv);
     interpol = (t_float)atom_getfloatarg(3, argc, argv);
   }
-  if(f <= 0.0f)
-    f = 0.000001f;
+  if(f <= 0.0)
+    f = 0.000001;
   x->cur_f = f;
   f *= x->sr;
-  if(f < 1.0e-20f)
-    x->cur_l = 1.0e20f;
-  else if(f > 1.57079632f)
-    x->cur_l = 0.0f;
+  if(f < 1.0e-20)
+    x->cur_l = 1.0e20;
+  else if(f > 1.57079632)
+    x->cur_l = 0.0;
   else
   {
     si = sin(f);
     co = cos(f);
     x->cur_l = co/si;
   }
-  if(q <= 0.0f)
-    q = 0.000001f;
-  x->cur_a = 1.0f/q;
+  if(q <= 0.0)
+    q = 0.000001;
+  x->cur_a = 1.0/q;
   x->cur_g = exp(0.11512925465 * l);
-  if(interpol <= 0.0f)
-    interpol = 0.0f;
+  if(interpol <= 0.0)
+    interpol = 0.0;
   x->interpol_time = interpol;
-  x->ticks_per_interpol_time = 0.5f;
+  x->ticks_per_interpol_time = 0.5;
   i = (int)((x->ticks_per_interpol_time)*(x->interpol_time));
   if(i <= 0)
     i = 1;
   x->ticks = i;
-  x->rcp_ticks = 1.0f / (t_float)i;
+  x->rcp_ticks = 1.0 / (t_float)i;
   x->end_f = x->cur_f;
   x->end_a = x->cur_a;
   x->end_g = x->cur_g;
diff --git a/iemlib1/src/peakenv_hold~.c b/iemlib1/src/peakenv_hold~.c
index 3e9b09a..f21a8d2 100644
--- a/iemlib1/src/peakenv_hold~.c
+++ b/iemlib1/src/peakenv_hold~.c
@@ -35,8 +35,8 @@ static void peakenv_hold_tilde_ft1(t_peakenv_hold_tilde *x, t_float t_hold)/* ho
 {
   double dhold;
   
-  if(t_hold < 0.0f)
-    t_hold = 0.0f;
+  if(t_hold < 0.0)
+    t_hold = 0.0;
   x->x_holdtime = (double)t_hold;
   dhold = x->x_sr*0.001*x->x_holdtime;
   if(dhold > 2147483647.0)
@@ -46,16 +46,16 @@ static void peakenv_hold_tilde_ft1(t_peakenv_hold_tilde *x, t_float t_hold)/* ho
 
 static void peakenv_hold_tilde_ft2(t_peakenv_hold_tilde *x, t_float t_rel)/* release-time in ms */
 {
-  if(t_rel < 0.0f)
-    t_rel = 0.0f;
+  if(t_rel < 0.0)
+    t_rel = 0.0;
   x->x_releasetime = (double)t_rel;
   x->x_c1 = exp(-1.0/(x->x_sr*0.001*x->x_releasetime));
 }
 
 static t_int *peakenv_hold_tilde_perform(t_int *w)
 {
-  t_float *in = (t_float *)(w[1]);
-  t_float *out = (t_float *)(w[2]);
+  t_sample *in = (t_sample *)(w[1]);
+  t_sample *out = (t_sample *)(w[2]);
   t_peakenv_hold_tilde *x = (t_peakenv_hold_tilde *)(w[3]);
   int n = (int)(w[4]);
   double peak = x->x_old_peak;
@@ -66,7 +66,7 @@ static t_int *peakenv_hold_tilde_perform(t_int *w)
   counter = x->x_counter;
   for(i=0; i<n; i++)
   {
-    absolute = (double)fabs(*in++);
+    absolute = (double)abs((double)(*in++));
     if(counter > 0)
       counter--;// hold peride
     else
@@ -76,7 +76,7 @@ static t_int *peakenv_hold_tilde_perform(t_int *w)
       peak = absolute;
       counter = x->x_n_hold;// new hold initialisation
     }
-    *out++ = (t_float)peak;
+    *out++ = (t_sample)peak;
   }
   /* NAN protect */
   //if(IEM_DENORMAL(peak))
@@ -106,7 +106,7 @@ static void *peakenv_hold_tilde_new(t_float t_hold, t_float t_rel)
   inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ft1"));
   inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ft2"));
   outlet_new(&x->x_obj, &s_signal);
-  x->x_float_sig_in = 0.0f;
+  x->x_float_sig_in = 0.0;
   return(x);
 }
 
diff --git a/iemlib1/src/peakenv~.c b/iemlib1/src/peakenv~.c
index 9937bcb..9e25e2c 100644
--- a/iemlib1/src/peakenv~.c
+++ b/iemlib1/src/peakenv~.c
@@ -30,16 +30,16 @@ static void peakenv_tilde_reset(t_peakenv_tilde *x)
 
 static void peakenv_tilde_ft1(t_peakenv_tilde *x, t_floatarg f)/* release-time in ms */
 {
-  if(f < 0.0f)
-    f = 0.0f;
+  if(f < 0.0)
+    f = 0.0;
   x->x_releasetime = (double)f;
   x->x_c1 = exp(-1.0/(x->x_sr*0.001*x->x_releasetime));
 }
 
 static t_int *peakenv_tilde_perform(t_int *w)
 {
-  t_float *in = (t_float *)(w[1]);
-  t_float *out = (t_float *)(w[2]);
+  t_sample *in = (t_sample *)(w[1]);
+  t_sample *out = (t_sample *)(w[2]);
   t_peakenv_tilde *x = (t_peakenv_tilde *)(w[3]);
   int n = (int)(w[4]);
   double peak = x->x_old_peak;
@@ -49,11 +49,11 @@ static t_int *peakenv_tilde_perform(t_int *w)
   
   for(i=0; i<n; i++)
   {
-    absolute = (double)fabs(*in++);
+    absolute = (double)abs((double)(*in++));
     peak *= c1;
     if(absolute > peak)
       peak = absolute;
-    *out++ = (t_float)peak;
+    *out++ = (t_sample)peak;
   }
   /* NAN protect */
   //if(IEM_DENORMAL(peak))
@@ -73,14 +73,14 @@ static void *peakenv_tilde_new(t_floatarg f)
 {
   t_peakenv_tilde *x = (t_peakenv_tilde *)pd_new(peakenv_tilde_class);
   
-  if(f <= 0.0f)
-    f = 0.0f;
+  if(f <= 0.0)
+    f = 0.0;
   x->x_sr = 44100.0;
   peakenv_tilde_ft1(x, f);
   x->x_old_peak = 0.0;
   inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ft1"));
   outlet_new(&x->x_obj, &s_signal);
-  x->x_float_sig_in = 0.0f;
+  x->x_float_sig_in = 0.0;
   return(x);
 }
 
diff --git a/iemlib1/src/prvu~.c b/iemlib1/src/prvu~.c
index 591c01e..0f2e6a4 100644
--- a/iemlib1/src/prvu~.c
+++ b/iemlib1/src/prvu~.c
@@ -39,16 +39,16 @@ static void prvu_tilde_tick_hold(t_prvu_tilde *x);
 
 static void prvu_tilde_reset(t_prvu_tilde *x)
 {
-  x->x_at[0].a_w.w_float = -99.9f;
-  x->x_at[1].a_w.w_float = -99.9f;
-  x->x_at[2].a_w.w_float = 0.0f;
+  x->x_at[0].a_w.w_float = -99.9;
+  x->x_at[1].a_w.w_float = -99.9;
+  x->x_at[2].a_w.w_float = 0.0;
   outlet_list(x->x_obj.ob_outlet, &s_list, 3, x->x_at);
   x->x_overflow_counter = 0;
-  x->x_cur_peak = 0.0f;
-  x->x_old_peak = 0.0f;
-  x->x_hold_peak = 0.0f;
-  x->x_sum_rms = 0.0f;
-  x->x_old_rms = 0.0f;
+  x->x_cur_peak = 0.0;
+  x->x_old_peak = 0.0;
+  x->x_hold_peak = 0.0;
+  x->x_sum_rms = 0.0;
+  x->x_old_rms = 0.0;
   x->x_hold = 0;
   clock_unset(x->x_clock_hold);
   clock_delay(x->x_clock_metro, x->x_metro_time);
@@ -82,25 +82,25 @@ static void prvu_tilde_float(t_prvu_tilde *x, t_floatarg f)
 
 static void prvu_tilde_t_release(t_prvu_tilde *x, t_floatarg release_time)
 {
-  if(release_time <= 5.0f)
-    release_time = 5.0f;
+  if(release_time <= 5.0)
+    release_time = 5.0;
   x->x_release_time = release_time;
-  x->x_c1 = exp(-2.0f*x->x_metro_time/x->x_release_time);
+  x->x_c1 = exp(-2.0*x->x_metro_time/x->x_release_time);
 }
 
 static void prvu_tilde_t_metro(t_prvu_tilde *x, t_floatarg metro_time)
 {
-  if(metro_time <= 5.0f)
-    metro_time = 5.0f;
+  if(metro_time <= 5.0)
+    metro_time = 5.0;
   x->x_metro_time = metro_time;
-  x->x_c1 = exp(-2.0f*x->x_metro_time/x->x_release_time);
-  x->x_rcp = 1.0f/(x->x_sr*(t_float)x->x_metro_time);
+  x->x_c1 = exp(-2.0*x->x_metro_time/x->x_release_time);
+  x->x_rcp = 1.0/(x->x_sr*(t_float)x->x_metro_time);
 }
 
 static void prvu_tilde_t_hold(t_prvu_tilde *x, t_floatarg hold_time)
 {
-  if(hold_time <= 5.0f)
-    hold_time = 5.0f;
+  if(hold_time <= 5.0)
+    hold_time = 5.0;
   x->x_hold_time = hold_time;
 }
 
@@ -111,7 +111,7 @@ static void prvu_tilde_threshold(t_prvu_tilde *x, t_floatarg thresh)
 
 static t_int *prvu_tilde_perform(t_int *w)
 {
-  t_float *in = (t_float *)(w[1]);
+  t_sample *in = (t_sample *)(w[1]);
   t_prvu_tilde *x = (t_prvu_tilde *)(w[2]);
   int n = (int)(w[3]);
   t_float peak = x->x_cur_peak, power, sum=x->x_sum_rms;
@@ -121,7 +121,7 @@ static t_int *prvu_tilde_perform(t_int *w)
   {
     for(i=0; i<n; i++)
     {
-      power = in[i]*in[i];
+      power = (t_float)(in[i]*in[i]);
       if(power > peak)
         peak = power;
       sum += power;
@@ -135,7 +135,7 @@ static t_int *prvu_tilde_perform(t_int *w)
 static void prvu_tilde_dsp(t_prvu_tilde *x, t_signal **sp)
 {
   x->x_sr = 0.001*(t_float)sp[0]->s_sr;
-  x->x_rcp = 1.0f/(x->x_sr*x->x_metro_time);
+  x->x_rcp = 1.0/(x->x_sr*x->x_metro_time);
   dsp_add(prvu_tilde_perform, 3, sp[0]->s_vec, x, sp[0]->s_n);
   clock_delay(x->x_clock_metro, x->x_metro_time);
 }
@@ -153,7 +153,7 @@ static void prvu_tilde_tick_metro(t_prvu_tilde *x)
   x->x_old_peak *= c1;
   /* NAN protect */
   if(IEM_DENORMAL(x->x_old_peak))
-    x->x_old_peak = 0.0f;
+    x->x_old_peak = 0.0;
   
   if(x->x_cur_peak > x->x_old_peak)
     x->x_old_peak = x->x_cur_peak;
@@ -165,37 +165,37 @@ static void prvu_tilde_tick_metro(t_prvu_tilde *x)
   }
   if(!x->x_hold)
     x->x_hold_peak = x->x_old_peak;
-  if(x->x_hold_peak <= 0.0000000001f)
-    dbp = -99.9f;
-  else if(x->x_hold_peak > 1000000.0f)
+  if(x->x_hold_peak <= 0.0000000001)
+    dbp = -99.9;
+  else if(x->x_hold_peak > 1000000.0)
   {
-    dbp = 60.0f;
-    x->x_hold_peak = 1000000.0f;
-    x->x_old_peak = 1000000.0f;
+    dbp = 60.0;
+    x->x_hold_peak = 1000000.0;
+    x->x_old_peak = 1000000.0;
   }
   else
-    dbp = 4.3429448195f*log(x->x_hold_peak);
-  x->x_cur_peak = 0.0f;
+    dbp = 4.3429448195*log(x->x_hold_peak);
+  x->x_cur_peak = 0.0;
   if(dbp >= x->x_threshold_over)
     x->x_overflow_counter++;
   x->x_at[1].a_w.w_float = dbp;
   x->x_at[2].a_w.w_float = (t_float)x->x_overflow_counter;
   
-  cur_rms = (1.0f - c1)*x->x_sum_rms*x->x_rcp + c1*x->x_old_rms;
+  cur_rms = (1.0 - c1)*x->x_sum_rms*x->x_rcp + c1*x->x_old_rms;
   /* NAN protect */
   if(IEM_DENORMAL(cur_rms))
-    cur_rms = 0.0f;
+    cur_rms = 0.0;
   
-  if(cur_rms <= 0.0000000001f)
-    dbr = -99.9f;
-  else if(cur_rms > 1000000.0f)
+  if(cur_rms <= 0.0000000001)
+    dbr = -99.9;
+  else if(cur_rms > 1000000.0)
   {
-    dbr = 60.0f;
-    x->x_old_rms = 1000000.0f;
+    dbr = 60.0;
+    x->x_old_rms = 1000000.0;
   }
   else
-    dbr = 4.3429448195f*log(cur_rms);
-  x->x_sum_rms = 0.0f;
+    dbr = 4.3429448195*log(cur_rms);
+  x->x_sum_rms = 0.0;
   x->x_old_rms = cur_rms;
   x->x_at[0].a_w.w_float = dbr;
   outlet_list(x->x_obj.ob_outlet, &s_list, 3, x->x_at);
@@ -216,33 +216,33 @@ static void *prvu_tilde_new(t_floatarg metro_time, t_floatarg hold_time,
   int i;
   
   x = (t_prvu_tilde *)pd_new(prvu_tilde_class);
-  if(metro_time <= 0.0f)
-    metro_time = 300.0f;
-  if(metro_time <= 5.0f)
-    metro_time = 5.0f;
-  if(release_time <= 0.0f)
-    release_time = 300.0f;
-  if(release_time <= 5.0f)
-    release_time = 5.0f;
-  if(hold_time <= 0.0f)
-    hold_time = 1000.0f;
-  if(hold_time <= 5.0f)
-    hold_time = 5.0f;
-  if(threshold == 0.0f)
-    threshold = -0.01f;
+  if(metro_time <= 0.0)
+    metro_time = 300.0;
+  if(metro_time <= 5.0)
+    metro_time = 5.0;
+  if(release_time <= 0.0)
+    release_time = 300.0;
+  if(release_time <= 5.0)
+    release_time = 5.0;
+  if(hold_time <= 0.0)
+    hold_time = 1000.0;
+  if(hold_time <= 5.0)
+    hold_time = 5.0;
+  if(threshold == 0.0)
+    threshold = -0.01;
   x->x_metro_time = metro_time;
   x->x_release_time = release_time;
   x->x_hold_time = hold_time;
   x->x_threshold_over = threshold;
-  x->x_c1 = exp(-2.0f*x->x_metro_time/x->x_release_time);
-  x->x_cur_peak = 0.0f;
-  x->x_old_peak = 0.0f;
-  x->x_hold_peak = 0.0f;
+  x->x_c1 = exp(-2.0*x->x_metro_time/x->x_release_time);
+  x->x_cur_peak = 0.0;
+  x->x_old_peak = 0.0;
+  x->x_hold_peak = 0.0;
   x->x_hold = 0;
-  x->x_sum_rms = 0.0f;
-  x->x_old_rms = 0.0f;
-  x->x_sr = 44.1f;
-  x->x_rcp = 1.0f/(x->x_sr*x->x_metro_time);
+  x->x_sum_rms = 0.0;
+  x->x_old_rms = 0.0;
+  x->x_sr = 44.1;
+  x->x_rcp = 1.0/(x->x_sr*x->x_metro_time);
   x->x_overflow_counter = 0;
   x->x_clock_metro = clock_new(x, (t_method)prvu_tilde_tick_metro);
   x->x_clock_hold = clock_new(x, (t_method)prvu_tilde_tick_hold);
@@ -251,7 +251,7 @@ static void *prvu_tilde_new(t_floatarg metro_time, t_floatarg hold_time,
   x->x_at[0].a_type = A_FLOAT;
   x->x_at[1].a_type = A_FLOAT;
   x->x_at[2].a_type = A_FLOAT;
-  x->x_float_sig_in = 0.0f;
+  x->x_float_sig_in = 0.0;
   return(x);
 }
 
@@ -270,5 +270,4 @@ void prvu_tilde_setup(void)
   class_addmethod(prvu_tilde_class, (t_method)prvu_tilde_t_metro, gensym("t_metro"), A_FLOAT, 0);
   class_addmethod(prvu_tilde_class, (t_method)prvu_tilde_t_hold, gensym("t_hold"), A_FLOAT, 0);
   class_addmethod(prvu_tilde_class, (t_method)prvu_tilde_threshold, gensym("threshold"), A_FLOAT, 0);
-//  class_sethelpsymbol(prvu_tilde_class, gensym("iemhelp/help-prvu~"));
 }
diff --git a/iemlib1/src/pvu~.c b/iemlib1/src/pvu~.c
index 1576b79..e1d4053 100644
--- a/iemlib1/src/pvu~.c
+++ b/iemlib1/src/pvu~.c
@@ -31,11 +31,11 @@ static void pvu_tilde_tick(t_pvu_tilde *x);
 
 static void pvu_tilde_reset(t_pvu_tilde *x)
 {
-  outlet_float(x->x_outlet_over, 0.0f);
-  outlet_float(x->x_outlet_meter, -199.9f);
+  outlet_float(x->x_outlet_over, 0.0);
+  outlet_float(x->x_outlet_meter, -199.9);
   x->x_overflow_counter = 0;
-  x->x_cur_peak = 0.0f;
-  x->x_old_peak = 0.0f;
+  x->x_cur_peak = 0.0;
+  x->x_old_peak = 0.0;
   clock_delay(x->x_clock, x->x_metro_time);
 }
 
@@ -67,16 +67,16 @@ static void pvu_tilde_float(t_pvu_tilde *x, t_floatarg f)
 
 static void pvu_tilde_t_release(t_pvu_tilde *x, t_floatarg release_time)
 {
-  if(release_time <= 5.0f)
-    release_time = 5.0f;
+  if(release_time <= 5.0)
+    release_time = 5.0;
   x->x_release_time = release_time;
   x->x_c1 = exp(-x->x_metro_time/release_time);
 }
 
 static void pvu_tilde_t_metro(t_pvu_tilde *x, t_floatarg metro_time)
 {
-  if(metro_time <= 5.0f)
-    metro_time = 5.0f;
+  if(metro_time <= 5.0)
+    metro_time = 5.0;
   x->x_metro_time = (int)metro_time;
   x->x_c1 = exp(-metro_time/x->x_release_time);
 }
@@ -88,7 +88,7 @@ static void pvu_tilde_threshold(t_pvu_tilde *x, t_floatarg thresh)
 
 static t_int *pvu_tilde_perform(t_int *w)
 {
-  t_float *in = (t_float *)(w[1]);
+  t_sample *in = (t_sample *)(w[1]);
   t_pvu_tilde *x = (t_pvu_tilde *)(w[2]);
   int n = (int)(w[3]);
   t_float peak = x->x_cur_peak;
@@ -99,7 +99,7 @@ static t_int *pvu_tilde_perform(t_int *w)
   {
     for(i=0; i<n; i++)
     {
-      absolute = fabs(*in++);
+      absolute = abs((t_float)(*in++));
       if(absolute > peak)
         peak = absolute;
     }
@@ -122,26 +122,26 @@ static void pvu_tilde_tick(t_pvu_tilde *x)
   x->x_old_peak *= x->x_c1;
   /* NAN protect */
   if(IEM_DENORMAL(x->x_old_peak))
-    x->x_old_peak = 0.0f;
+    x->x_old_peak = 0.0;
   
   if(x->x_cur_peak > x->x_old_peak)
     x->x_old_peak = x->x_cur_peak;
-  if(x->x_old_peak <= 0.0000000001f)
-    db = -199.9f;
-  else if(x->x_old_peak > 1000000.0f)
+  if(x->x_old_peak <= 0.0000000001)
+    db = -199.9;
+  else if(x->x_old_peak > 1000000.0)
   {
-    db = 120.0f;
-    x->x_old_peak = 1000000.0f;
+    db = 120.0;
+    x->x_old_peak = 1000000.0;
   }
   else
-    db = 8.6858896381f*log(x->x_old_peak);
+    db = 8.6858896381*log(x->x_old_peak);
   if(db >= x->x_threshold_over)
   {
     x->x_overflow_counter++;
     outlet_float(x->x_outlet_over, (t_float)x->x_overflow_counter);
   }
   outlet_float(x->x_outlet_meter, db);
-  x->x_cur_peak = 0.0f;
+  x->x_cur_peak = 0.0;
   clock_delay(x->x_clock, x->x_metro_time);
 }
 
@@ -151,28 +151,28 @@ static void *pvu_tilde_new(t_floatarg metro_time, t_floatarg release_time, t_flo
   t_float t;
   
   x = (t_pvu_tilde *)pd_new(pvu_tilde_class);
-  if(metro_time <= 0.0f)
-    metro_time = 300.0f;
-  if(metro_time <= 5.0f)
-    metro_time = 5.0f;
-  if(release_time <= 0.0f)
-    release_time = 300.0f;
-  if(release_time <= 5.0f)
-    release_time = 5.0f;
-  if(threshold == 0.0f)
-    threshold = -0.01f;
+  if(metro_time <= 0.0)
+    metro_time = 300.0;
+  if(metro_time <= 5.0)
+    metro_time = 5.0;
+  if(release_time <= 0.0)
+    release_time = 300.0;
+  if(release_time <= 5.0)
+    release_time = 5.0;
+  if(threshold == 0.0)
+    threshold = -0.01;
   x->x_threshold_over = threshold;
   x->x_overflow_counter = 0;
   x->x_metro_time = metro_time;
   x->x_release_time = release_time;
   x->x_c1 = exp(-metro_time/release_time);
-  x->x_cur_peak = 0.0f;
-  x->x_old_peak = 0.0f;
+  x->x_cur_peak = 0.0;
+  x->x_old_peak = 0.0;
   x->x_clock = clock_new(x, (t_method)pvu_tilde_tick);
   x->x_outlet_meter = outlet_new(&x->x_obj, &s_float);/* left */
   x->x_outlet_over = outlet_new(&x->x_obj, &s_float); /* right */
   x->x_started = 1;
-  x->x_float_sig_in = 0.0f;
+  x->x_float_sig_in = 0.0;
   return(x);
 }
 
@@ -194,5 +194,4 @@ void pvu_tilde_setup(void )
   class_addmethod(pvu_tilde_class, (t_method)pvu_tilde_t_release, gensym("t_release"), A_FLOAT, 0);
   class_addmethod(pvu_tilde_class, (t_method)pvu_tilde_t_metro, gensym("t_metro"), A_FLOAT, 0);
   class_addmethod(pvu_tilde_class, (t_method)pvu_tilde_threshold, gensym("threshold"), A_FLOAT, 0);
-//  class_sethelpsymbol(pvu_tilde_class, gensym("iemhelp/help-pvu~"));
 }
diff --git a/iemlib1/src/rvu~.c b/iemlib1/src/rvu~.c
index 059a064..e93e420 100644
--- a/iemlib1/src/rvu~.c
+++ b/iemlib1/src/rvu~.c
@@ -30,9 +30,9 @@ static void rvu_tilde_tick_metro(t_rvu_tilde *x);
 
 static void rvu_tilde_reset(t_rvu_tilde *x)
 {
-  outlet_float(x->x_obj.ob_outlet, -99.9f);
-  x->x_sum_rms = 0.0f;
-  x->x_old_rms = 0.0f;
+  outlet_float(x->x_obj.ob_outlet, -99.9);
+  x->x_sum_rms = 0.0;
+  x->x_old_rms = 0.0;
   clock_delay(x->x_clock_metro, x->x_metro_time);
 }
 
@@ -50,7 +50,7 @@ static void rvu_tilde_start(t_rvu_tilde *x)
 
 static void rvu_tilde_float(t_rvu_tilde *x, t_floatarg f)
 {
-  if(f == 0.0f)
+  if(f == 0.0)
   {
     clock_unset(x->x_clock_metro);
     x->x_started = 0;
@@ -64,24 +64,24 @@ static void rvu_tilde_float(t_rvu_tilde *x, t_floatarg f)
 
 static void rvu_tilde_t_release(t_rvu_tilde *x, t_floatarg release_time)
 {
-  if(release_time <= 5.0f)
-    release_time = 5.0f;
+  if(release_time <= 5.0)
+    release_time = 5.0;
   x->x_release_time = release_time;
-  x->x_c1 = exp(-2.0f*x->x_metro_time/x->x_release_time);
+  x->x_c1 = exp(-2.0*x->x_metro_time/x->x_release_time);
 }
 
 static void rvu_tilde_t_metro(t_rvu_tilde *x, t_floatarg metro_time)
 {
-  if(metro_time <= 5.0f)
-    metro_time = 5.0f;
+  if(metro_time <= 5.0)
+    metro_time = 5.0;
   x->x_metro_time = metro_time;
-  x->x_c1 = exp(-2.0f*x->x_metro_time/x->x_release_time);
-  x->x_rcp = 1.0f/(x->x_sr*x->x_metro_time);
+  x->x_c1 = exp(-2.0*x->x_metro_time/x->x_release_time);
+  x->x_rcp = 1.0/(x->x_sr*x->x_metro_time);
 }
 
 static t_int *rvu_tilde_perform(t_int *w)
 {
-  t_float *in = (t_float *)(w[1]);
+  t_sample *in = (t_sample *)(w[1]);
   t_rvu_tilde *x = (t_rvu_tilde *)(w[2]);
   int n = (int)(w[3]);
   t_float sum=x->x_sum_rms;
@@ -91,7 +91,7 @@ static t_int *rvu_tilde_perform(t_int *w)
   {
     for(i=0; i<n; i++)
     {
-      sum += in[i]*in[i];
+      sum += (t_float)(in[i]*in[i]);
     }
     x->x_sum_rms = sum;
   }
@@ -101,7 +101,7 @@ static t_int *rvu_tilde_perform(t_int *w)
 static void rvu_tilde_dsp(t_rvu_tilde *x, t_signal **sp)
 {
   x->x_sr = 0.001*(t_float)sp[0]->s_sr;
-  x->x_rcp = 1.0f/(x->x_sr*x->x_metro_time);
+  x->x_rcp = 1.0/(x->x_sr*x->x_metro_time);
   dsp_add(rvu_tilde_perform, 3, sp[0]->s_vec, x, sp[0]->s_n);
   clock_delay(x->x_clock_metro, x->x_metro_time);
 }
@@ -110,21 +110,21 @@ static void rvu_tilde_tick_metro(t_rvu_tilde *x)
 {
   t_float dbr, cur_rms, c1=x->x_c1;
   
-  cur_rms = (1.0f - c1)*x->x_sum_rms*x->x_rcp + c1*x->x_old_rms;
+  cur_rms = (1.0 - c1)*x->x_sum_rms*x->x_rcp + c1*x->x_old_rms;
   /* NAN protect */
   if(IEM_DENORMAL(cur_rms))
-    cur_rms = 0.0f;
+    cur_rms = 0.0;
   
-  if(cur_rms <= 0.0000000001f)
-    dbr = -99.9f;
-  else if(cur_rms > 1000000.0f)
+  if(cur_rms <= 0.0000000001)
+    dbr = -99.9;
+  else if(cur_rms > 1000000.0)
   {
-    dbr = 60.0f;
-    x->x_old_rms = 1000000.0f;
+    dbr = 60.0;
+    x->x_old_rms = 1000000.0;
   }
   else
-    dbr = 4.3429448195f*log(cur_rms);
-  x->x_sum_rms = 0.0f;
+    dbr = 4.3429448195*log(cur_rms);
+  x->x_sum_rms = 0.0;
   x->x_old_rms = cur_rms;
   outlet_float(x->x_obj.ob_outlet, dbr);
   clock_delay(x->x_clock_metro, x->x_metro_time);
@@ -139,25 +139,25 @@ static void *rvu_tilde_new(t_floatarg metro_time, t_floatarg release_time)
 {
   t_rvu_tilde *x=(t_rvu_tilde *)pd_new(rvu_tilde_class);
   
-  if(metro_time <= 0.0f)
-    metro_time = 300.0f;
-  if(metro_time <= 5.0f)
-    metro_time = 5.0f;
-  if(release_time <= 0.0f)
-    release_time = 300.0f;
-  if(release_time <= 5.0f)
-    release_time = 5.0f;
+  if(metro_time <= 0.0)
+    metro_time = 300.0;
+  if(metro_time <= 5.0)
+    metro_time = 5.0;
+  if(release_time <= 0.0)
+    release_time = 300.0;
+  if(release_time <= 5.0)
+    release_time = 5.0;
   x->x_metro_time = metro_time;
   x->x_release_time = release_time;
-  x->x_c1 = exp(-2.0f*x->x_metro_time/x->x_release_time);
-  x->x_sum_rms = 0.0f;
-  x->x_old_rms = 0.0f;
-  x->x_sr = 44.1f;
-  x->x_rcp = 1.0f/(x->x_sr*x->x_metro_time);
+  x->x_c1 = exp(-2.0*x->x_metro_time/x->x_release_time);
+  x->x_sum_rms = 0.0;
+  x->x_old_rms = 0.0;
+  x->x_sr = 44.1;
+  x->x_rcp = 1.0/(x->x_sr*x->x_metro_time);
   x->x_clock_metro = clock_new(x, (t_method)rvu_tilde_tick_metro);
   x->x_started = 1;
   outlet_new(&x->x_obj, &s_float);
-  x->x_float_sig_in = 0.0f;
+  x->x_float_sig_in = 0.0;
   return(x);
 }
 
@@ -174,5 +174,4 @@ void rvu_tilde_setup(void)
   class_addmethod(rvu_tilde_class, (t_method)rvu_tilde_stop, gensym("stop"), 0);
   class_addmethod(rvu_tilde_class, (t_method)rvu_tilde_t_release, gensym("t_release"), A_FLOAT, 0);
   class_addmethod(rvu_tilde_class, (t_method)rvu_tilde_t_metro, gensym("t_metro"), A_FLOAT, 0);
-//  class_sethelpsymbol(rvu_tilde_class, gensym("iemhelp/help-rvu~"));
 }
diff --git a/iemlib1/src/sin_phase~.c b/iemlib1/src/sin_phase~.c
index 0707758..e99f3a7 100644
--- a/iemlib1/src/sin_phase~.c
+++ b/iemlib1/src/sin_phase~.c
@@ -13,11 +13,11 @@ iemlib1 written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2006
 typedef struct _sin_phase_tilde
 {
   t_object x_obj;
-  t_float  x_prev1;
-  t_float  x_prev2;
-  t_float  x_cur_out;
-  int      x_counter1;
-  int      x_counter2;
+  t_sample x_prev1;
+  t_sample x_prev2;
+  t_sample x_cur_out;
+  t_sample x_counter1;
+  t_sample x_counter2;
   int      x_state1;
   int      x_state2;
   t_float  x_float_sig_in;
@@ -27,49 +27,49 @@ static t_class *sin_phase_tilde_class;
 
 static t_int *sin_phase_tilde_perform(t_int *w)
 {
-  t_float *in1 = (t_float *)(w[1]);
-  t_float *in2 = (t_float *)(w[2]);
-  t_float *out = (t_float *)(w[3]);
+  t_sample *in1 = (t_sample *)(w[1]);
+  t_sample *in2 = (t_sample *)(w[2]);
+  t_sample *out = (t_sample *)(w[3]);
   t_sin_phase_tilde *x = (t_sin_phase_tilde *)(w[4]);
   int i, n = (t_int)(w[5]);
-  t_float prev1=x->x_prev1;
-  t_float prev2=x->x_prev2;
-  t_float cur_out=x->x_cur_out;
-  int counter1=x->x_counter1;
-  int counter2=x->x_counter2;
+  t_sample prev1=x->x_prev1;
+  t_sample prev2=x->x_prev2;
+  t_sample cur_out=x->x_cur_out;
+  t_sample counter1=x->x_counter1;
+  t_sample counter2=x->x_counter2;
   int state1=x->x_state1;
   int state2=x->x_state2;
   
   for(i=0; i<n; i++)
   {
-    if((in1[i] >= 0.0f) && (prev1 < 0.0f))
+    if((in1[i] >= 0.0) && (prev1 < 0.0))
     {/* pos. zero cross of sig_in_1 */
       state1 = 1;
-      counter1 = 0;
+      counter1 = prev1 / (prev1 - in1[i]);  /* x = y1 / (y1 - y2) */
     }
-    else if((in1[i] < 0.0f) && (prev1 >= 0.0f))
+    else if((in1[i] < 0.0) && (prev1 >= 0.0))
     {/* neg. zero cross of sig_in_1 */
       state2 = 1;
-      counter2 = 0;
+      counter2 = prev1 / (prev1 - in1[i]);  /* x = y1 / (y1 - y2) */
     }
     
-    if((in2[i] >= 0.0f) && (prev2 < 0.0f))
+    if((in2[i] >= 0.0) && (prev2 < 0.0))
     {/* pos. zero cross of sig_in_2 */
       state1 = 0;
-      cur_out = (t_float)(counter1);
-      counter1 = 0;
+      cur_out = counter1 + prev2 / (prev2 - in2[i]) - 1.0;
+      counter1 = 0.0;
     }
-    else if((in2[i] < 0.0f) && (prev2 >= 0.0f))
+    else if((in2[i] < 0.0) && (prev2 >= 0.0))
     {/* neg. zero cross of sig_in_2 */
       state2 = 0;
-      cur_out = (t_float)(counter2);
-      counter2 = 0;
+      cur_out = counter2 + prev2 / (prev2 - in2[i]) - 1.0;
+      counter2 = 0.0;
     }
     
     if(state1)
-      counter1++;
+      counter1 += 1.0;
     if(state2)
-      counter2++;
+      counter2 += 1.0;
     
     prev1 = in1[i];
     prev2 = in2[i];
@@ -99,14 +99,14 @@ static void *sin_phase_tilde_new(void)
   inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_signal, &s_signal);
   outlet_new(&x->x_obj, &s_signal);
   
-  x->x_prev1 = 0.0f;
-  x->x_prev2 = 0.0f;
-  x->x_cur_out = 0.0f;
-  x->x_counter1 = 0;
-  x->x_counter2 = 0;
+  x->x_prev1 = 0.0;
+  x->x_prev2 = 0.0;
+  x->x_cur_out = 0.0;
+  x->x_counter1 = 0.0;
+  x->x_counter2 = 0.0;
   x->x_state1 = 0;
   x->x_state2 = 0;
-  x->x_float_sig_in = 0.0f;
+  x->x_float_sig_in = 0.0;
   
   return (x);
 }
@@ -117,5 +117,16 @@ void sin_phase_tilde_setup(void)
         0, sizeof(t_sin_phase_tilde), 0, 0);
   CLASS_MAINSIGNALIN(sin_phase_tilde_class, t_sin_phase_tilde, x_float_sig_in);
   class_addmethod(sin_phase_tilde_class, (t_method)sin_phase_tilde_dsp, gensym("dsp"), 0);
-//  class_sethelpsymbol(sin_phase_tilde_class, gensym("iemhelp/help-sin_phase~"));
 }
+
+/*
+geradengleichung:
+
+y - y1 = ((y2 - y1) / (x2 - x1)) * (x - x1)
+y = ((y2 - y1) / (x2 - x1)) * (x - x1) + y1 = 0
+x1 = 0
+x2 = 1
+0 = ((y2 - y1) / 1) * (x) + y1
+-y1 = (y2 - y1) * x
+x = y1 / (y1 - y2)
+*/
diff --git a/iemlib1/src/soundfile_info.c b/iemlib1/src/soundfile_info.c
index 654f71a..f018370 100644
--- a/iemlib1/src/soundfile_info.c
+++ b/iemlib1/src/soundfile_info.c
@@ -61,6 +61,186 @@ static unsigned long soundfile_info_string_to_uint32(char *cvec)
   return(ul);
 }
 
+static void soundfile_info_uint32_to_string(char *cvec, unsigned long ul)
+{
+  unsigned char *uc=(unsigned char *)cvec;
+  
+  *uc = (unsigned char)(0x000000ff & ul);
+  *(uc+1) = (unsigned char)(0x000000ff & (ul/256));
+  *(uc+2) = (unsigned char)(0x000000ff & (ul/65536));
+  *(uc+3) = (unsigned char)(0x000000ff & (ul/16777216));
+  return;
+}
+
+static void soundfile_info_overwrite_sr(t_soundfile_info *x, t_symbol *filename, t_floatarg new_sr)
+{
+  char completefilename[400];
+  int i, n, n2, n4, filesize, read_chars, header_size=0, ch, bytesperframe, sr, n_frames;
+  FILE *fh;
+  t_atom *at;
+  char *cvec;
+  unsigned long ul_chunk_size, ul_sr;
+  short ss_format, ss_ch, ss_bytesperframe;
+  
+  if(filename->s_name[0] == '/')/*make complete path + filename*/
+  {
+    strcpy(completefilename, filename->s_name);
+  }
+  else if(((filename->s_name[0] >= 'A')&&(filename->s_name[0] <= 'Z')||
+           (filename->s_name[0] >= 'a')&&(filename->s_name[0] <= 'z'))&&
+          (filename->s_name[1] == ':')&&(filename->s_name[2] == '/'))
+  {
+    strcpy(completefilename, filename->s_name);
+  }
+  else
+  {
+    strcpy(completefilename, canvas_getdir(x->x_canvas)->s_name);
+    strcat(completefilename, "/");
+    strcat(completefilename, filename->s_name);
+  }
+  
+  fh = fopen(completefilename,"r+b");
+  if(!fh)
+  {
+    post("soundfile_info_read: cannot open %s !!\n", completefilename);
+  }
+  else
+  {
+    n = x->x_mem_size; // 10000 bytes
+    n2 = sizeof(short) * x->x_mem_size;
+    n4 = sizeof(long) * x->x_mem_size;
+    fseek(fh, 0, SEEK_END);
+    filesize = ftell(fh);
+    fseek(fh,0,SEEK_SET);
+    read_chars = (int)fread(x->x_begmem, sizeof(char), n4, fh) / 2;
+    //    post("read chars = %d", read_chars);
+    cvec = (char *)x->x_begmem;
+    if(read_chars > 4)
+    {
+      if(strncmp(cvec, "RIFF", 4))
+      {
+        post("soundfile_info_read-error:  %s is no RIFF-WAVE-file", completefilename);
+        goto sr_soundfile_info_end;
+      }
+      header_size += 8; // jump over RIFF chunk size
+      cvec += 8;
+      if(strncmp(cvec, "WAVE", 4))
+      {
+        post("soundfile_info_read-error:  %s is no RIFF-WAVE-file", completefilename);
+        goto sr_soundfile_info_end;
+      }
+      header_size += 4;
+      cvec += 4;
+      
+      for(i=header_size/2; i<read_chars; i++)
+      {
+        if(!strncmp(cvec, "fmt ", 4))
+        {
+          header_size += 4;
+          cvec += 4;
+          goto sr_soundfile_info_fmt;
+        }
+        header_size += 2;
+        cvec += 2;
+      }
+      post("soundfile_info_read-error:  %s has at begin no format-chunk", completefilename);
+      goto sr_soundfile_info_end;
+      
+    sr_soundfile_info_fmt:
+      ul_chunk_size = soundfile_info_string_to_uint32(cvec);
+      if(ul_chunk_size < 16)
+      {
+        post("soundfile_info_read-error:  %s has a format-chunk less than 16", completefilename);
+        goto sr_soundfile_info_end;
+      }
+      header_size += 4;
+      cvec += 4;
+      
+      ss_format = soundfile_info_string_to_int16(cvec);
+      if((ss_format != 1) && (ss_format != 3) && (ss_format != 6) && (ss_format != 7) && (ss_format != -2)) /* PCM = 1 ; IEEE-FLOAT = 3 ; ALAW = 6 ; MULAW = 7 ; WAVE_EX = -2 */
+      {
+        post("soundfile_info_read-error:  %s has unknown format code", completefilename);
+        goto sr_soundfile_info_end;
+      }
+      header_size += 2;
+      cvec += 2;
+      
+      ss_ch = soundfile_info_string_to_int16(cvec); /* channels */
+      if((ss_ch < 1) || (ss_ch > 32000))
+      {
+        post("soundfile_info_read-error:  %s has no common channel-number", completefilename);
+        goto sr_soundfile_info_end;
+      }
+      SETFLOAT(x->x_at_header+SFI_HEADER_CHANNELS, (t_float)ss_ch);
+      ch = (int)ss_ch;
+      header_size += 2;
+      cvec += 2;
+      
+      ul_sr = soundfile_info_string_to_uint32(cvec); /* samplerate */
+      if((ul_sr > 2000000000) || (ul_sr < 1))
+      {
+        post("soundfile_info_read-error:  %s has no common samplerate", completefilename);
+        goto sr_soundfile_info_end;
+      }
+      ul_sr = (unsigned long)new_sr;
+      soundfile_info_uint32_to_string(cvec, ul_sr);
+      
+      fseek(fh,0,SEEK_SET);
+      read_chars = (int)fwrite (x->x_begmem, sizeof(char), n4, fh);
+      fclose(fh);
+      post("written");
+      
+      sr = (int)ul_sr;
+      header_size += 4;
+      cvec += 4;
+      
+      header_size += 4; /* jump over bytes_per_sec */
+      cvec += 4;
+      
+      ss_bytesperframe = soundfile_info_string_to_int16(cvec); /* bytes_per_frame */
+      if((ss_bytesperframe < 1) || (ss_bytesperframe > 32000))
+      {
+        post("soundfile_info_read-error:  %s has no common number of bytes per frame", completefilename);
+        goto sr_soundfile_info_end;
+      }
+      
+      bytesperframe = (int)ss_bytesperframe;
+      header_size += 2;
+      cvec += 2;
+      
+      header_size += 2; /* jump over bits_per_sample */
+      cvec += 2;
+      
+      for(i=header_size/2; i<read_chars; i++) // looking for data chunk
+      {
+        if(!strncmp(cvec, "data", 4))
+          goto sr_soundfile_info_data;
+        header_size += 2;
+        cvec += 2;
+      }
+      post("soundfile_info_read-error:  %s has at begin no data-chunk", completefilename);
+      goto sr_soundfile_info_end;
+      
+    sr_soundfile_info_data:
+      header_size += 8; // ignore data chunk size
+      cvec += 8;
+      
+      
+      
+      /*      post("ch = %d", ch);
+       post("sr = %d", sr);
+       post("bpf = %d", bytesperframe/ch);
+       post("head = %d", header_size);
+       post("len = %d", n_frames);*/
+      
+      
+    sr_soundfile_info_end:
+      
+      ;
+    }
+  }
+}
+
 static void soundfile_info_read(t_soundfile_info *x, t_symbol *filename)
 {
   char completefilename[400];
@@ -255,5 +435,5 @@ void soundfile_info_setup(void)
   soundfile_info_class = class_new(gensym("soundfile_info"), (t_newmethod)soundfile_info_new,
     (t_method)soundfile_info_free, sizeof(t_soundfile_info), 0, 0);
   class_addmethod(soundfile_info_class, (t_method)soundfile_info_read, gensym("read"), A_SYMBOL, 0);
-//  class_sethelpsymbol(soundfile_info_class, gensym("iemhelp/help-soundfile_info"));
+  class_addmethod(soundfile_info_class, (t_method)soundfile_info_overwrite_sr, gensym("overwrite_sr"), A_SYMBOL, A_FLOAT, 0);
 }
diff --git a/iemlib1/src/sparse_FIR~.c b/iemlib1/src/sparse_FIR~.c
index 5a40f66..879f367 100644
--- a/iemlib1/src/sparse_FIR~.c
+++ b/iemlib1/src/sparse_FIR~.c
@@ -14,12 +14,12 @@ iemlib1 written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2010
 typedef struct _sparse_FIR_tilde
 {
   t_object  x_obj;
-  t_float   *x_coef_beg;
+  t_sample  *x_coef_beg;
   int       *x_index_beg;
   int       x_n_coef_resp_order;
   int       x_n_coef;
   int       x_n_coef_malloc;
-  t_float   *x_history_beg;
+  t_sample  *x_history_beg;
   int       x_n_order;
   int       x_n_order_malloc;
   int       x_rw_index;
@@ -30,8 +30,8 @@ static t_class *sparse_FIR_tilde_class;
 
 static t_int *sparse_FIR_tilde_perform(t_int *w)
 {
-  t_float *in = (t_float *)(w[1]);
-  t_float *out = (t_float *)(w[2]);
+  t_sample *in = (t_sample *)(w[1]);
+  t_sample *out = (t_sample *)(w[2]);
   t_sparse_FIR_tilde *x = (t_sparse_FIR_tilde *)(w[3]);
   int n = (t_int)(w[4]);
   int rw_index = x->x_rw_index;
@@ -39,15 +39,15 @@ static t_int *sparse_FIR_tilde_perform(t_int *w)
   int order = x->x_n_order;
   int n_coef = x->x_n_coef_resp_order;
   int n_coef8;
-  t_float sum=0.0f;
-  t_float *coef = x->x_coef_beg;
+  t_sample sum=0.0;
+  t_sample *coef = x->x_coef_beg;
   int *index = x->x_index_beg;
-  t_float *write_hist1=x->x_history_beg;
-  t_float *write_hist2;
-  t_float *read_hist;
-  t_float *coef_vec;
+  t_sample *write_hist1=x->x_history_beg;
+  t_sample *write_hist2;
+  t_sample *read_hist;
+  t_sample *coef_vec;
   int *index_vec;
-  t_float *hist_vec;
+  t_sample *hist_vec;
   
   if((order < 1) || (n_coef < 1))
     goto sparse_FIR_tilde_perf_zero;
@@ -61,7 +61,7 @@ static t_int *sparse_FIR_tilde_perform(t_int *w)
   {
     write_hist1[rw_index] = in[i];
     write_hist2[rw_index] = in[i];
-    sum = 0.0f;
+    sum = 0.0;
     coef_vec = coef;
     index_vec = index;
     hist_vec = &read_hist[rw_index];
@@ -103,7 +103,7 @@ static t_int *sparse_FIR_tilde_perform(t_int *w)
 sparse_FIR_tilde_perf_zero:
   
   while(n--)
-    *out++ = 0.0f;
+    *out++ = 0.0;
   return(w+5);
 }
 
diff --git a/iemlib1/src/vcf_filter~.c b/iemlib1/src/vcf_filter~.c
index 7caa68d..3771ecc 100644
--- a/iemlib1/src/vcf_filter~.c
+++ b/iemlib1/src/vcf_filter~.c
@@ -13,8 +13,8 @@ iemlib1 written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2006
 typedef struct _vcf_filter_tilde
 {
   t_object x_obj;
-  t_float  x_wn1;
-  t_float  x_wn2;
+  t_sample x_wn1;
+  t_sample x_wn2;
   t_float  x_float_sig_in1;
   char     x_filtname[6];
 } t_vcf_filter_tilde;
@@ -23,8 +23,8 @@ static t_class *vcf_filter_tilde_class;
 
 static t_int *vcf_filter_tilde_perform_snafu(t_int *w)
 {
-  t_float *in = (t_float *)(w[1]);
-  t_float *out = (t_float *)(w[4]);
+  t_sample *in = (t_sample *)(w[1]);
+  t_sample *out = (t_sample *)(w[4]);
   int n = (t_int)(w[6]);
   
   while(n--)
@@ -61,52 +61,52 @@ wn1 = wn0;
 
 static t_int *vcf_filter_tilde_perform_lp2(t_int *w)
 {
-  t_float *in = (t_float *)(w[1]);
-  t_float *lp = (t_float *)(w[2]);
-  t_float *q = (t_float *)(w[3]);
-  t_float *out = (t_float *)(w[4]);
+  t_sample *in = (t_sample *)(w[1]);
+  t_sample *lp = (t_sample *)(w[2]);
+  t_sample *q = (t_sample *)(w[3]);
+  t_sample *out = (t_sample *)(w[4]);
   t_vcf_filter_tilde *x = (t_vcf_filter_tilde *)(w[5]);
   int i, n = (t_int)(w[6]);
-  t_float wn0, wn1=x->x_wn1, wn2=x->x_wn2;
-  t_float l, al, l2, rcp;
+  t_sample wn0, wn1=x->x_wn1, wn2=x->x_wn2;
+  t_sample l, al, l2, rcp;
   
   for(i=0; i<n; i+=4)
   {
     l = lp[i];
-    if(q[i] < 0.000001f)
-      al = 1000000.0f*l;
-    else if(q[i] > 1000000.0f)
-      al = 0.000001f*l;
+    if(q[i] < 0.000001)
+      al = 1000000.0*l;
+    else if(q[i] > 1000000.0)
+      al = 0.000001*l;
     else
       al = l/q[i];
-    l2 = l*l + 1.0f;
-    rcp = 1.0f/(al + l2);
+    l2 = l*l + 1.0;
+    rcp = 1.0/(al + l2);
     
-    wn0 = *in++ - rcp*(2.0f*(2.0f - l2)*wn1 + (l2 - al)*wn2);
-    *out++ = rcp*(wn0 + 2.0f*wn1 + wn2);
+    wn0 = *in++ - rcp*(2.0*(2.0 - l2)*wn1 + (l2 - al)*wn2);
+    *out++ = rcp*(wn0 + 2.0*wn1 + wn2);
     wn2 = wn1;
     wn1 = wn0;
     
-    wn0 = *in++ - rcp*(2.0f*(2.0f - l2)*wn1 + (l2 - al)*wn2);
-    *out++ = rcp*(wn0 + 2.0f*wn1 + wn2);
+    wn0 = *in++ - rcp*(2.0*(2.0 - l2)*wn1 + (l2 - al)*wn2);
+    *out++ = rcp*(wn0 + 2.0*wn1 + wn2);
     wn2 = wn1;
     wn1 = wn0;
     
-    wn0 = *in++ - rcp*(2.0f*(2.0f - l2)*wn1 + (l2 - al)*wn2);
-    *out++ = rcp*(wn0 + 2.0f*wn1 + wn2);
+    wn0 = *in++ - rcp*(2.0*(2.0 - l2)*wn1 + (l2 - al)*wn2);
+    *out++ = rcp*(wn0 + 2.0*wn1 + wn2);
     wn2 = wn1;
     wn1 = wn0;
     
-    wn0 = *in++ - rcp*(2.0f*(2.0f - l2)*wn1 + (l2 - al)*wn2);
-    *out++ = rcp*(wn0 + 2.0f*wn1 + wn2);
+    wn0 = *in++ - rcp*(2.0*(2.0 - l2)*wn1 + (l2 - al)*wn2);
+    *out++ = rcp*(wn0 + 2.0*wn1 + wn2);
     wn2 = wn1;
     wn1 = wn0;
   }
   /* NAN protect */
   if(IEM_DENORMAL(wn2))
-    wn2 = 0.0f;
+    wn2 = 0.0;
   if(IEM_DENORMAL(wn1))
-    wn1 = 0.0f;
+    wn1 = 0.0;
   
   x->x_wn1 = wn1;
   x->x_wn2 = wn2;
@@ -115,53 +115,53 @@ static t_int *vcf_filter_tilde_perform_lp2(t_int *w)
 
 static t_int *vcf_filter_tilde_perform_bp2(t_int *w)
 {
-  t_float *in = (t_float *)(w[1]);
-  t_float *lp = (t_float *)(w[2]);
-  t_float *q = (t_float *)(w[3]);
-  t_float *out = (t_float *)(w[4]);
+  t_sample *in = (t_sample *)(w[1]);
+  t_sample *lp = (t_sample *)(w[2]);
+  t_sample *q = (t_sample *)(w[3]);
+  t_sample *out = (t_sample *)(w[4]);
   t_vcf_filter_tilde *x = (t_vcf_filter_tilde *)(w[5]);
   int i, n = (t_int)(w[6]);
-  t_float wn0, wn1=x->x_wn1, wn2=x->x_wn2;
-  t_float l, al, l2, rcp;
+  t_sample wn0, wn1=x->x_wn1, wn2=x->x_wn2;
+  t_sample l, al, l2, rcp;
   
   for(i=0; i<n; i+=4)
   {
     l = lp[i];
-    if(q[i] < 0.000001f)
-      al = 1000000.0f*l;
-    else if(q[i] > 1000000.0f)
-      al = 0.000001f*l;
+    if(q[i] < 0.000001)
+      al = 1000000.0*l;
+    else if(q[i] > 1000000.0)
+      al = 0.000001*l;
     else
       al = l/q[i];
-    l2 = l*l + 1.0f;
-    rcp = 1.0f/(al + l2);
+    l2 = l*l + 1.0;
+    rcp = 1.0/(al + l2);
     
     
-    wn0 = *in++ - rcp*(2.0f*(2.0f - l2)*wn1 + (l2 - al)*wn2);
+    wn0 = *in++ - rcp*(2.0*(2.0 - l2)*wn1 + (l2 - al)*wn2);
     *out++ = rcp*al*(wn0 - wn2);
     wn2 = wn1;
     wn1 = wn0;
     
-    wn0 = *in++ - rcp*(2.0f*(2.0f - l2)*wn1 + (l2 - al)*wn2);
+    wn0 = *in++ - rcp*(2.0*(2.0 - l2)*wn1 + (l2 - al)*wn2);
     *out++ = rcp*al*(wn0 - wn2);
     wn2 = wn1;
     wn1 = wn0;
     
-    wn0 = *in++ - rcp*(2.0f*(2.0f - l2)*wn1 + (l2 - al)*wn2);
+    wn0 = *in++ - rcp*(2.0*(2.0 - l2)*wn1 + (l2 - al)*wn2);
     *out++ = rcp*al*(wn0 - wn2);
     wn2 = wn1;
     wn1 = wn0;
     
-    wn0 = *in++ - rcp*(2.0f*(2.0f - l2)*wn1 + (l2 - al)*wn2);
+    wn0 = *in++ - rcp*(2.0*(2.0 - l2)*wn1 + (l2 - al)*wn2);
     *out++ = rcp*al*(wn0 - wn2);
     wn2 = wn1;
     wn1 = wn0;
   }
   /* NAN protect */
   if(IEM_DENORMAL(wn2))
-    wn2 = 0.0f;
+    wn2 = 0.0;
   if(IEM_DENORMAL(wn1))
-    wn1 = 0.0f;
+    wn1 = 0.0;
   
   x->x_wn1 = wn1;
   x->x_wn2 = wn2;
@@ -170,53 +170,53 @@ static t_int *vcf_filter_tilde_perform_bp2(t_int *w)
 
 static t_int *vcf_filter_tilde_perform_rbp2(t_int *w)
 {
-  t_float *in = (t_float *)(w[1]);
-  t_float *lp = (t_float *)(w[2]);
-  t_float *q = (t_float *)(w[3]);
-  t_float *out = (t_float *)(w[4]);
+  t_sample *in = (t_sample *)(w[1]);
+  t_sample *lp = (t_sample *)(w[2]);
+  t_sample *q = (t_sample *)(w[3]);
+  t_sample *out = (t_sample *)(w[4]);
   t_vcf_filter_tilde *x = (t_vcf_filter_tilde *)(w[5]);
   int i, n = (t_int)(w[6]);
-  t_float wn0, wn1=x->x_wn1, wn2=x->x_wn2;
-  t_float al, l, l2, rcp;
+  t_sample wn0, wn1=x->x_wn1, wn2=x->x_wn2;
+  t_sample al, l, l2, rcp;
   
   for(i=0; i<n; i+=4)
   {
     l = lp[i];
-    if(q[i] < 0.000001f)
-      al = 1000000.0f*l;
-    else if(q[i] > 1000000.0f)
-      al = 0.000001f*l;
+    if(q[i] < 0.000001)
+      al = 1000000.0*l;
+    else if(q[i] > 1000000.0)
+      al = 0.000001*l;
     else
       al = l/q[i];
-    l2 = l*l + 1.0f;
-    rcp = 1.0f/(al + l2);
+    l2 = l*l + 1.0;
+    rcp = 1.0/(al + l2);
     
     
-    wn0 = *in++ - rcp*(2.0f*(2.0f - l2)*wn1 + (l2 - al)*wn2);
+    wn0 = *in++ - rcp*(2.0*(2.0 - l2)*wn1 + (l2 - al)*wn2);
     *out++ = rcp*l*(wn0 - wn2);
     wn2 = wn1;
     wn1 = wn0;
     
-    wn0 = *in++ - rcp*(2.0f*(2.0f - l2)*wn1 + (l2 - al)*wn2);
+    wn0 = *in++ - rcp*(2.0*(2.0 - l2)*wn1 + (l2 - al)*wn2);
     *out++ = rcp*l*(wn0 - wn2);
     wn2 = wn1;
     wn1 = wn0;
     
-    wn0 = *in++ - rcp*(2.0f*(2.0f - l2)*wn1 + (l2 - al)*wn2);
+    wn0 = *in++ - rcp*(2.0*(2.0 - l2)*wn1 + (l2 - al)*wn2);
     *out++ = rcp*l*(wn0 - wn2);
     wn2 = wn1;
     wn1 = wn0;
     
-    wn0 = *in++ - rcp*(2.0f*(2.0f - l2)*wn1 + (l2 - al)*wn2);
+    wn0 = *in++ - rcp*(2.0*(2.0 - l2)*wn1 + (l2 - al)*wn2);
     *out++ = rcp*l*(wn0 - wn2);
     wn2 = wn1;
     wn1 = wn0;
   }
   /* NAN protect */
   if(IEM_DENORMAL(wn2))
-    wn2 = 0.0f;
+    wn2 = 0.0;
   if(IEM_DENORMAL(wn1))
-    wn1 = 0.0f;
+    wn1 = 0.0;
   
   x->x_wn1 = wn1;
   x->x_wn2 = wn2;
@@ -225,53 +225,53 @@ static t_int *vcf_filter_tilde_perform_rbp2(t_int *w)
 
 static t_int *vcf_filter_tilde_perform_hp2(t_int *w)
 {
-  t_float *in = (t_float *)(w[1]);
-  t_float *lp = (t_float *)(w[2]);
-  t_float *q = (t_float *)(w[3]);
-  t_float *out = (t_float *)(w[4]);
+  t_sample *in = (t_sample *)(w[1]);
+  t_sample *lp = (t_sample *)(w[2]);
+  t_sample *q = (t_sample *)(w[3]);
+  t_sample *out = (t_sample *)(w[4]);
   t_vcf_filter_tilde *x = (t_vcf_filter_tilde *)(w[5]);
   int i, n = (t_int)(w[6]);
-  t_float wn0, wn1=x->x_wn1, wn2=x->x_wn2;
-  t_float l, al, l2, rcp, forw;
+  t_sample wn0, wn1=x->x_wn1, wn2=x->x_wn2;
+  t_sample l, al, l2, rcp, forw;
   
   for(i=0; i<n; i+=4)
   {
     l = lp[i];
-    if(q[i] < 0.000001f)
-      al = 1000000.0f*l;
-    else if(q[i] > 1000000.0f)
-      al = 0.000001f*l;
+    if(q[i] < 0.000001)
+      al = 1000000.0*l;
+    else if(q[i] > 1000000.0)
+      al = 0.000001*l;
     else
       al = l/q[i];
-    l2 = l*l + 1.0f;
-    rcp = 1.0f/(al + l2);
-    forw = rcp * (l2 - 1.0f);
+    l2 = l*l + 1.0;
+    rcp = 1.0/(al + l2);
+    forw = rcp * (l2 - 1.0);
     
-    wn0 = *in++ - rcp*(2.0f*(2.0f - l2)*wn1 + (l2 - al)*wn2);
-    *out++ = forw*(wn0 - 2.0f*wn1 + wn2);
+    wn0 = *in++ - rcp*(2.0*(2.0 - l2)*wn1 + (l2 - al)*wn2);
+    *out++ = forw*(wn0 - 2.0*wn1 + wn2);
     wn2 = wn1;
     wn1 = wn0;
     
-    wn0 = *in++ - rcp*(2.0f*(2.0f - l2)*wn1 + (l2 - al)*wn2);
-    *out++ = forw*(wn0 - 2.0f*wn1 + wn2);
+    wn0 = *in++ - rcp*(2.0*(2.0 - l2)*wn1 + (l2 - al)*wn2);
+    *out++ = forw*(wn0 - 2.0*wn1 + wn2);
     wn2 = wn1;
     wn1 = wn0;
     
-    wn0 = *in++ - rcp*(2.0f*(2.0f - l2)*wn1 + (l2 - al)*wn2);
-    *out++ = forw*(wn0 - 2.0f*wn1 + wn2);
+    wn0 = *in++ - rcp*(2.0*(2.0 - l2)*wn1 + (l2 - al)*wn2);
+    *out++ = forw*(wn0 - 2.0*wn1 + wn2);
     wn2 = wn1;
     wn1 = wn0;
     
-    wn0 = *in++ - rcp*(2.0f*(2.0f - l2)*wn1 + (l2 - al)*wn2);
-    *out++ = forw*(wn0 - 2.0f*wn1 + wn2);
+    wn0 = *in++ - rcp*(2.0*(2.0 - l2)*wn1 + (l2 - al)*wn2);
+    *out++ = forw*(wn0 - 2.0*wn1 + wn2);
     wn2 = wn1;
     wn1 = wn0;
   }
   /* NAN protect */
   if(IEM_DENORMAL(wn2))
-    wn2 = 0.0f;
+    wn2 = 0.0;
   if(IEM_DENORMAL(wn1))
-    wn1 = 0.0f;
+    wn1 = 0.0;
   
   x->x_wn1 = wn1;
   x->x_wn2 = wn2;
@@ -318,8 +318,8 @@ static void *vcf_filter_tilde_new(t_symbol *filt_typ)
   inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_signal, &s_signal);
   outlet_new(&x->x_obj, &s_signal);
   x->x_float_sig_in1 = 0;
-  x->x_wn1 = 0.0f;
-  x->x_wn2 = 0.0f;
+  x->x_wn1 = 0.0;
+  x->x_wn2 = 0.0;
   c = (char *)filt_typ->s_name;
   c[5] = 0;
   strcpy(x->x_filtname, c);