diff options
author | IOhannes m zmölnig <zmoelnig@users.sourceforge.net> | 2005-05-11 13:05:29 +0000 |
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committer | IOhannes m zmölnig <zmoelnig@users.sourceforge.net> | 2005-05-11 13:05:29 +0000 |
commit | c74f9041a42d95190b88990e91c2587f2f57a056 (patch) | |
tree | 5679242a76c8f8a0fc59fcc044c97c01b6713471 /src/mtx_sub.c | |
parent | f4299cb7e6a5e161aa16670acd33de1ef75fae4d (diff) |
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
Diffstat (limited to 'src/mtx_sub.c')
-rw-r--r-- | src/mtx_sub.c | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/src/mtx_sub.c b/src/mtx_sub.c new file mode 100644 index 0000000..aff1a76 --- /dev/null +++ b/src/mtx_sub.c @@ -0,0 +1,158 @@ +/* + * iemmatrix + * + * objects for manipulating simple matrices + * mostly refering to matlab/octave matrix functions + * + * Copyright (c) IOhannes m zm�lnig, forum::f�r::uml�ute + * 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_sub + * mtx_- + */ + +static t_class *mtx_sub_class, *mtx_subscalar_class; + +static void mtx_subscalar_matrix(t_mtx_binscalar *x, t_symbol *s, int argc, t_atom *argv) +{ + int n=argc-2; + int row=atom_getfloat(argv), col=atom_getfloat(argv+1); + + t_float offset=x->f; + t_atom *buf; + t_atom *ap=argv+2; + + if(argc<2){post("mtx_sub: crippled matrix");return; } + adjustsize(&x->m, row, col); + + buf=x->m.atombuffer+2; + + while(n--){ + buf->a_type = A_FLOAT; + buf++->a_w.w_float = atom_getfloat(ap++) - offset; + } + outlet_anything(x->x_obj.ob_outlet, gensym("matrix"), argc, x->m.atombuffer); +} +static void mtx_subscalar_list(t_mtx_binscalar *x, t_symbol *s, int argc, t_atom *argv) +{ + int n=argc; + t_atom *m; + t_float offset = x->f; + adjustsize(&x->m, 1, argc); + m = x->m.atombuffer; + + while(n--){ + m->a_type = A_FLOAT; + (m++)->a_w.w_float = atom_getfloat(argv++) - offset; + } + outlet_list(x->x_obj.ob_outlet, gensym("list"), argc, x->m.atombuffer); +} + +static void mtx_sub_matrix(t_mtx_binmtx *x, t_symbol *s, int argc, t_atom *argv) +{ + int row=atom_getfloat(argv); + int col=atom_getfloat(argv+1); + t_atom *m; + t_atom *m1 = argv+2; + t_atom *m2 = x->m2.atombuffer+2; + int n = argc-2; + + if (argc<2){ post("mtx_sub: crippled matrix"); return; } + if ((col<1)||(row<1)) { post("mtx_sub: 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)) { + outlet_anything(x->x_obj.ob_outlet, gensym("matrix"), argc, argv); + return; + } + + if ((col!=x->m2.col)||(row!=x->m2.row)){ + post("mtx_sub: matrix dimensions do not match"); + /* LATER SOLVE THIS */ + return; + } + adjustsize(&x->m, row, col); + m = x->m.atombuffer+2; + + while(n--){ + t_float f = atom_getfloat(m1++)-atom_getfloat(m2++); + SETFLOAT(m, f); + m++; + } + + outlet_anything(x->x_obj.ob_outlet, gensym("matrix"), argc, x->m.atombuffer); +} +static void mtx_sub_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("mulitply with 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, f-atom_getfloat(ap2++)); + ap++; + } + + outlet_anything(x->x_obj.ob_outlet, gensym("matrix"), m->row*m->col+2, m->atombuffer); +} +static void *mtx_sub_new(t_symbol *s, int argc, t_atom *argv) +{ + if (argc>1) post("mtx_sub : extra arguments ignored"); + if (argc) { + t_mtx_binscalar *x = (t_mtx_binscalar *)pd_new(mtx_subscalar_class); + floatinlet_new(&x->x_obj, &x->f); + x->f = atom_getfloatarg(0, argc, argv); + outlet_new(&x->x_obj, 0); + return(x); + } else { + t_mtx_binmtx *x = (t_mtx_binmtx *)pd_new(mtx_sub_class); + inlet_new(&x->x_obj, &x->x_obj.ob_pd, gensym("matrix"), gensym("")); + outlet_new(&x->x_obj, 0); + x->m.col = x->m.row = x->m2.col = x->m2.row = 0; + x->m.atombuffer = x->m2.atombuffer = 0; + return(x); + } +} + +void mtx_sub_setup(void) +{ + mtx_sub_class = class_new(gensym("mtx_sub"), (t_newmethod)mtx_sub_new, (t_method)mtx_binmtx_free, + sizeof(t_mtx_binmtx), 0, A_GIMME, 0); + class_addcreator((t_newmethod)mtx_sub_new, gensym("mtx_-"), A_GIMME,0); + class_addmethod(mtx_sub_class, (t_method)mtx_sub_matrix, gensym("matrix"), A_GIMME, 0); + class_addmethod(mtx_sub_class, (t_method)mtx_bin_matrix2, gensym(""), A_GIMME, 0); + class_addfloat (mtx_sub_class, mtx_sub_float); + class_addbang (mtx_sub_class, mtx_binmtx_bang); + + mtx_subscalar_class = class_new(gensym("mtx_sub"), 0, (t_method)mtx_binscalar_free, + sizeof(t_mtx_binscalar), 0, 0); + class_addcreator(0, gensym("mtx_-"), 0, 0); + class_addmethod(mtx_subscalar_class, (t_method)mtx_subscalar_matrix, gensym("matrix"), A_GIMME, 0); + class_addlist (mtx_subscalar_class, mtx_subscalar_list); + class_addbang (mtx_subscalar_class, mtx_binscalar_bang); + + class_sethelpsymbol(mtx_sub_class, gensym("iemmatrix/mtx_binops")); + class_sethelpsymbol(mtx_subscalar_class, gensym("iemmatrix/mtx_binops")); +} + +void iemtx_sub_setup(void) +{ + mtx_sub_setup(); +} |