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Diffstat (limited to 'iemlib1/src/iem_sqrt4~.c')
-rw-r--r--iemlib1/src/iem_sqrt4~.c57
1 files changed, 24 insertions, 33 deletions
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~"));
}