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/*
array_complex.c
Ruby/GSL: Ruby extension library for GSL (GNU Scientific Library)
(C) Copyright 2001-2006 by Yoshiki Tsunesada
Ruby/GSL is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License.
This library is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY.
*/
#include "rb_gsl_config.h"
#include "rb_gsl_complex.h"
#include "rb_gsl_array.h"
enum {
GSL_COMPLEX_ADD,
GSL_COMPLEX_SUB,
GSL_COMPLEX_MUL,
GSL_COMPLEX_DIV,
};
static VALUE rb_gsl_complex_arithmetics5(int flag, VALUE obj, VALUE bb);
static VALUE rb_gsl_complex_arithmetics5(int flag, VALUE obj, VALUE bb)
{
gsl_complex *a = NULL, *b = NULL, *c = NULL, tmp, tmp2;
gsl_matrix *m = NULL;
gsl_matrix_complex *cm = NULL, *cmself = NULL;
gsl_vector *v = NULL;
gsl_vector_complex *cv = NULL, *cvnew = NULL;
gsl_complex (*func1)(gsl_complex, gsl_complex);
// local variables "func2" iand "func3" declared and set, but never used
//int (*func2)(gsl_matrix_complex*, const gsl_matrix_complex*);
//int (*func3)(gsl_matrix_complex*, const gsl_complex);
int flagcm = 0;
switch (flag) {
case GSL_COMPLEX_ADD:
func1 = gsl_complex_add;
//func2 = gsl_matrix_complex_add;
//func3 = gsl_matrix_complex_add_constant;
break;
case GSL_COMPLEX_SUB:
func1 = gsl_complex_sub;
//func2 = gsl_matrix_complex_sub;
//func3 = gsl_matrix_complex_add_constant;
break;
case GSL_COMPLEX_MUL:
func1 = gsl_complex_mul;
//func2 = gsl_matrix_complex_mul_elements;
//func3 = gsl_matrix_complex_scale;
break;
case GSL_COMPLEX_DIV:
func1 = gsl_complex_div;
//func2 = gsl_matrix_complex_div_elements;
//func3 = gsl_matrix_complex_scale;
break;
default:
rb_raise(rb_eRuntimeError, "undefined operation");
}
CHECK_COMPLEX(obj);
Data_Get_Struct(obj, gsl_complex, a);
switch (TYPE(bb)) {
case T_FLOAT:
case T_FIXNUM:
case T_BIGNUM:
tmp2 = gsl_complex_rect(NUM2DBL(bb), 0.0);
b = &tmp2;
tmp = (*func1)(*a, *b);
switch (flag) {
case GSL_COMPLEX_ADD:
case GSL_COMPLEX_SUB:
case GSL_COMPLEX_MUL:
case GSL_COMPLEX_DIV:
c = ALLOC(gsl_complex);
*c = tmp;
return Data_Wrap_Struct(cgsl_complex, 0, free, c);
break;
}
break;
default:
if (COMPLEX_P(bb)) {
Data_Get_Struct(bb, gsl_complex, b);
tmp = (*func1)(*a, *b);
switch (flag) {
case GSL_COMPLEX_ADD:
case GSL_COMPLEX_SUB:
case GSL_COMPLEX_MUL:
case GSL_COMPLEX_DIV:
c = ALLOC(gsl_complex);
*c = tmp;
return Data_Wrap_Struct(cgsl_complex, 0, free, c);
break;
}
} else {
if (VECTOR_P(bb)) {
Data_Get_Struct(bb, gsl_vector, v);
cv = vector_to_complex(v);
cvnew = gsl_vector_complex_alloc(v->size);
if (cvnew == NULL) rb_raise(rb_eNoMemError, "gsl_vector_complex_alloc failed");
gsl_vector_complex_set_all(cvnew, *a);
switch (flag) {
case GSL_COMPLEX_ADD:
gsl_vector_complex_add(cvnew, cv);
break;
case GSL_COMPLEX_SUB:
gsl_vector_complex_sub(cvnew, cv);
break;
case GSL_COMPLEX_MUL:
gsl_vector_complex_mul(cvnew, cv);
break;
case GSL_COMPLEX_DIV:
gsl_vector_complex_add(cvnew, cv);
break;
}
gsl_vector_complex_free(cv);
return Data_Wrap_Struct(cgsl_vector_complex, 0, gsl_vector_complex_free, cvnew);
}
if (VECTOR_COMPLEX_P(bb)) {
Data_Get_Struct(bb, gsl_vector_complex, cv);
cvnew = gsl_vector_complex_alloc(v->size);
if (cvnew == NULL) rb_raise(rb_eNoMemError, "gsl_vector_complex_alloc failed");
gsl_vector_complex_set_all(cvnew, *a);
switch (flag) {
case GSL_COMPLEX_ADD:
gsl_vector_complex_add(cvnew, cv);
break;
case GSL_COMPLEX_SUB:
gsl_vector_complex_sub(cvnew, cv);
break;
case GSL_COMPLEX_MUL:
gsl_vector_complex_mul(cvnew, cv);
break;
case GSL_COMPLEX_DIV:
gsl_vector_complex_add(cvnew, cv);
break;
}
return Data_Wrap_Struct(cgsl_vector_complex, 0, gsl_vector_complex_free, cvnew);
}
if (MATRIX_P(bb)) {
Data_Get_Struct(bb, gsl_matrix, m);
cm = matrix_to_complex(m);
flagcm = 1;
} else if (MATRIX_COMPLEX_P(bb)) {
Data_Get_Struct(bb, gsl_matrix_complex, cm);
} else {
rb_raise(rb_eTypeError, "wrong argument type %s", rb_class2name(CLASS_OF(bb)));
}
cmself = gsl_matrix_complex_alloc(m->size1, m->size2);
if (cmself == NULL) rb_raise(rb_eNoMemError, "gsl_matrix_complex_alloc failed");
gsl_matrix_complex_set_all(cmself, *a);
switch (flag) {
case GSL_COMPLEX_ADD:
gsl_matrix_complex_add(cmself, cm);
break;
case GSL_COMPLEX_SUB:
gsl_matrix_complex_sub(cmself, cm);
break;
case GSL_COMPLEX_MUL:
gsl_matrix_complex_mul_elements(cmself, cm);
break;
case GSL_COMPLEX_DIV:
gsl_matrix_complex_div_elements(cmself, cm);
break;
}
if (flagcm == 1) gsl_matrix_complex_free(cm);
return Data_Wrap_Struct(cgsl_matrix_complex, 0, gsl_matrix_complex_free, cmself);
}
}
/* never reach here */
return Qnil;
}
static VALUE rb_gsl_complex_add(VALUE obj, VALUE bb)
{
return rb_gsl_complex_arithmetics5(GSL_COMPLEX_ADD, obj, bb);
}
static VALUE rb_gsl_complex_sub(VALUE obj, VALUE bb)
{
return rb_gsl_complex_arithmetics5(GSL_COMPLEX_SUB, obj, bb);
}
static VALUE rb_gsl_complex_mul(VALUE obj, VALUE bb)
{
return rb_gsl_complex_arithmetics5(GSL_COMPLEX_MUL, obj, bb);
}
static VALUE rb_gsl_complex_div(VALUE obj, VALUE bb)
{
return rb_gsl_complex_arithmetics5(GSL_COMPLEX_DIV, obj, bb);
}
static VALUE rb_gsl_complex_coerce(VALUE obj, VALUE other)
{
gsl_complex *c = NULL;
gsl_matrix *m = NULL;
gsl_matrix_complex *cmnew = NULL, *cmself = NULL;
VALUE vcmself, vcmnew;
double x;
switch (TYPE(other)) {
case T_FLOAT: case T_FIXNUM: case T_BIGNUM:
x = NUM2DBL(other);
c = ALLOC(gsl_complex);
*c = gsl_complex_rect(x, 0.0);
return rb_ary_new3(2, Data_Wrap_Struct(cgsl_complex, 0, free, c),
obj);
break;
default:
if (MATRIX_P(other)) {
Data_Get_Struct(other, gsl_matrix, m);
cmnew = matrix_to_complex(m);
vcmnew = Data_Wrap_Struct(cgsl_matrix_complex, 0, gsl_matrix_complex_free, cmnew);
cmself = gsl_matrix_complex_alloc(m->size1, m->size2);
if (cmself == NULL) rb_raise(rb_eNoMemError, "gsl_matrix_complex_alloc failed");
Data_Get_Struct(obj, gsl_complex, c);
gsl_matrix_complex_set_all(cmself, *c);
vcmself = Data_Wrap_Struct(cgsl_matrix_complex, 0, gsl_matrix_complex_free, cmself);
return rb_ary_new3(2, vcmself, vcmnew);
}
if (MATRIX_COMPLEX_P(other)) {
Data_Get_Struct(other, gsl_matrix_complex, cmnew);
cmself = gsl_matrix_complex_alloc(cmnew->size1, cmnew->size2);
if (cmself == NULL) rb_raise(rb_eNoMemError, "gsl_matrix_complex_alloc failed");
vcmself = Data_Wrap_Struct(cgsl_matrix_complex, 0, gsl_matrix_complex_free, cmself);
return rb_ary_new3(2, vcmself, other);
} else {
rb_raise(rb_eTypeError, "cannot coerce to GSL::Complex");
}
}
}
void Init_gsl_array_complex(VALUE mgsl)
{
rb_define_method(cgsl_complex, "coerce", rb_gsl_complex_coerce, 1);
rb_define_method(cgsl_complex, "add", rb_gsl_complex_add, 1);
rb_define_alias(cgsl_complex, "+", "add");
rb_define_method(cgsl_complex, "sub", rb_gsl_complex_sub, 1);
rb_define_alias(cgsl_complex, "-", "sub");
rb_define_method(cgsl_complex, "mul", rb_gsl_complex_mul, 1);
rb_define_alias(cgsl_complex, "*", "mul");
rb_define_method(cgsl_complex, "div", rb_gsl_complex_div, 1);
rb_define_alias(cgsl_complex, "/", "div");
}
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