From c74f9041a42d95190b88990e91c2587f2f57a056 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?IOhannes=20m=20zm=C3=B6lnig?= Date: Wed, 11 May 2005 13:05:29 +0000 Subject: split the objects from mtx_binops into several files: mtx_add, mtx_sub, mtx_mul, mtx_pow mtx_binops is still there for glue functions exposed some important operations on float-arrays via iemmatrix.h (mtx_doInvert, mtx_doTranspose, mtx_doMultiply) as you can easily see, they all start with "mtx_do" and a capital letter; they all return a pointer to (newly allocated) memory with the result svn path=/trunk/externals/iem/iemmatrix/; revision=2947 --- src/mtx_pow.c | 163 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 163 insertions(+) create mode 100644 src/mtx_pow.c (limited to 'src/mtx_pow.c') diff --git a/src/mtx_pow.c b/src/mtx_pow.c new file mode 100644 index 0000000..f8b0212 --- /dev/null +++ b/src/mtx_pow.c @@ -0,0 +1,163 @@ +/* + * iemmatrix + * + * objects for manipulating simple matrices + * mostly refering to matlab/octave matrix functions + * + * Copyright (c) IOhannes m zmölnig, forum::für::umläute + * IEM, Graz, Austria + * + * For information on usage and redistribution, and for a DISCLAIMER OF ALL + * WARRANTIES, see the file, "LICENSE.txt," in this distribution. + * + */ +#include "iemmatrix.h" + +/* mtx_.^ */ +/* LATER: do a mtx_pow, mtx_^ */ + +#ifdef __APPLE__ +/* there is no such thing like powf on apple... */ +static inline float powf (float v, float p) +{ + return (float) pow((double)v, (double) p); +} +#endif /* __APPLE__ */ + +static t_class *mtx_powelement_class, *mtx_powscalar_class; + +static void mtx_powelement_matrix(t_mtx_binmtx *x, t_symbol *s, int argc, t_atom *argv) +{ + int row=atom_getfloat(argv++); + int col=atom_getfloat(argv++); + t_atom *m; + t_atom *m2 = x->m2.atombuffer+2; + int n = argc-2; + + if (argc<2){ post("mtx_pow: crippled matrix"); return; } + if ((col<1)||(row<1)) { post("mtx_pow: invalid dimensions"); return; } + if (col*row>argc-2){ post("sparse matrix not yet supported : use \"mtx_check\""); return; } + if (!(x->m2.col*x->m2.row)) { + adjustsize(&x->m, row, col); + matrix_set(&x->m, 0); + outlet_anything(x->x_obj.ob_outlet, gensym("matrix"), argc, x->m.atombuffer); + return; + } + if ((col!=x->m2.col)||(row!=x->m2.row)){ post("matrix dimension do not match"); /* LATER SOLVE THIS */ return; } + + adjustsize(&x->m, row, col); + m = x->m.atombuffer+2; + + while(n--){ + t_float f = powf(atom_getfloat(argv++),atom_getfloat(m2++)); + SETFLOAT(m, f); + m++; + } + + outlet_anything(x->x_obj.ob_outlet, gensym("matrix"), argc, x->m.atombuffer); +} +static void mtx_powelement_float(t_mtx_binmtx *x, t_float f) +{ + t_matrix *m=&x->m, *m2=&x->m2; + t_atom *ap, *ap2=m2->atombuffer+2; + int row2, col2, n; + + if (!m2->atombuffer){ post("power by what ?"); return; } + + row2=atom_getfloat(m2->atombuffer); + col2=atom_getfloat(m2->atombuffer+1); + adjustsize(m, row2, col2); + ap=m->atombuffer+2; + + n=row2*col2; + + while(n--){ + SETFLOAT(ap, powf(f,atom_getfloat(ap2++))); + ap++; + } + + outlet_anything(x->x_obj.ob_outlet, gensym("matrix"), m->row*m->col+2, m->atombuffer); +} +static void mtx_powscalar_matrix(t_mtx_binscalar *x, t_symbol *s, int argc, t_atom *argv) +{ + int n=argc-2; + t_atom *m; + t_float factor = x->f; + int row=atom_getfloat(argv++); + int col=atom_getfloat(argv++); + + if (argc<2){ + post("mtx_pow: crippled matrix"); + return; + } + adjustsize(&x->m, row, col); + m = x->m.atombuffer+2; + + while(n--){ + m->a_type = A_FLOAT; + (m++)->a_w.w_float = powf(atom_getfloat(argv++),factor); + } + + outlet_anything(x->x_obj.ob_outlet, gensym("matrix"), argc, x->m.atombuffer); +} +static void mtx_powscalar_list(t_mtx_binscalar *x, t_symbol *s, int argc, t_atom *argv) +{ + int n=argc; + t_atom *m; + t_float factor = x->f; + + adjustsize(&x->m, 1, argc); + m = x->m.atombuffer; + + while(n--){ + m->a_type = A_FLOAT; + (m++)->a_w.w_float = powf(atom_getfloat(argv++),factor); + } + + outlet_list(x->x_obj.ob_outlet, gensym("list"), argc, x->m.atombuffer); +} + +static void *mtx_pow_new(t_symbol *s, int argc, t_atom *argv) +{ + if (argc>1) post("mtx_pow : extra arguments ignored"); + if (argc) { + /* scalar powision */ + t_mtx_binscalar *x = (t_mtx_binscalar *)pd_new(mtx_powscalar_class); + floatinlet_new(&x->x_obj, &x->f); + x->f = atom_getfloatarg(0, argc, argv); + outlet_new(&x->x_obj, 0); + return(x); + } else { + /* element powision */ + t_matrix *x = (t_matrix *)pd_new(mtx_powelement_class); + inlet_new(&x->x_obj, &x->x_obj.ob_pd, gensym("matrix"), gensym("")); + outlet_new(&x->x_obj, 0); + x->col = x->row = 0; + x->atombuffer = 0; + return(x); + } +} + +void mtx_pow_setup(void) +{ + mtx_powelement_class = class_new(gensym("mtx_.^"), (t_newmethod)mtx_pow_new, (t_method)mtx_binmtx_free, + sizeof(t_mtx_binmtx), 0, A_GIMME, 0); + class_addmethod(mtx_powelement_class, (t_method)mtx_powelement_matrix, gensym("matrix"), A_GIMME, 0); + class_addmethod(mtx_powelement_class, (t_method)mtx_bin_matrix2, gensym(""), A_GIMME, 0); + class_addfloat (mtx_powelement_class, mtx_powelement_float); + class_addbang (mtx_powelement_class, mtx_binmtx_bang); + + mtx_powscalar_class = class_new(gensym("mtx_.^"), 0, (t_method)mtx_binscalar_free, + sizeof(t_mtx_binscalar), 0, 0); + class_addmethod(mtx_powscalar_class, (t_method)mtx_powscalar_matrix, gensym("matrix"), A_GIMME, 0); + class_addlist (mtx_powscalar_class, mtx_powscalar_list); + class_addbang (mtx_powscalar_class, mtx_binscalar_bang); + + class_sethelpsymbol(mtx_powelement_class, gensym("iemmatrix/mtx_binops")); + class_sethelpsymbol(mtx_powscalar_class, gensym("iemmatrix/mtx_binops")); +} + +void iemtx_pow_setup(void) +{ + mtx_pow_setup(); +} -- cgit v1.2.1