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/*
sf_trigonometric.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 "include/rb_gsl_sf.h"
static VALUE rb_gsl_sf_sin(VALUE obj, VALUE x)
{
if (COMPLEX_P(x) || VECTOR_COMPLEX_P(x) || MATRIX_COMPLEX_P(x))
return rb_gsl_math_complex_eval(gsl_complex_sin, x);
return rb_gsl_sf_eval1(gsl_sf_sin, x);
}
static VALUE rb_gsl_sf_sin_e(VALUE obj, VALUE x)
{
return rb_gsl_sf_eval_e(gsl_sf_sin_e, x);
}
static VALUE rb_gsl_sf_cos(VALUE obj, VALUE x)
{
if (COMPLEX_P(x) || VECTOR_COMPLEX_P(x) || MATRIX_COMPLEX_P(x))
return rb_gsl_math_complex_eval(gsl_complex_cos, x);
return rb_gsl_sf_eval1(gsl_sf_cos, x);
}
static VALUE rb_gsl_sf_cos_e(VALUE obj, VALUE x)
{
return rb_gsl_sf_eval_e(gsl_sf_cos_e, x);
}
static VALUE rb_gsl_sf_hypot(VALUE obj, VALUE x, VALUE y)
{
Need_Float(x); Need_Float(y);
return rb_float_new(gsl_sf_hypot(NUM2DBL(x), NUM2DBL(y)));
}
static VALUE rb_gsl_sf_hypot_e(VALUE obj, VALUE x, VALUE y)
{
return rb_gsl_sf_eval_e_double2(gsl_sf_hypot_e, x, y);
}
static VALUE rb_gsl_sf_sinc(VALUE obj, VALUE x)
{
return rb_gsl_sf_eval1(gsl_sf_sinc, x);
}
static VALUE rb_gsl_sf_sinc_e(VALUE obj, VALUE x)
{
return rb_gsl_sf_eval_e(gsl_sf_sinc_e, x);
}
static VALUE rb_gsl_sf_complex_XXX_e(int argc, VALUE *argv, VALUE obj,
int (*f)(double, double, gsl_sf_result*, gsl_sf_result*))
{
gsl_sf_result *r1, *r2;
gsl_complex *z;
double re, im;
VALUE v1, v2;
// local variable "status" declared and set, but never used
//int status;
switch (argc) {
case 1:
CHECK_COMPLEX(argv[0]);
Data_Get_Struct(argv[0], gsl_complex, z);
re = GSL_REAL(*z);
im = GSL_IMAG(*z);
break;
case 2:
Need_Float(argv[0]); Need_Float(argv[1]);
re = NUM2DBL(argv[0]);
im = NUM2DBL(argv[1]);
break;
default:
rb_raise(rb_eArgError, "wrong number of arguments (%d for 1 or 2)", argc);
break;
}
v1 = Data_Make_Struct(cgsl_sf_result, gsl_sf_result, 0, free, r1);
v2 = Data_Make_Struct(cgsl_sf_result, gsl_sf_result, 0, free, r2);
/*status =*/ (*f)(re, im, r1, r2);
return rb_ary_new3(2, v1, v2);
}
static VALUE rb_gsl_sf_complex_sin_e(int argc, VALUE *argv, VALUE obj)
{
return rb_gsl_sf_complex_XXX_e(argc, argv, obj, gsl_sf_complex_sin_e);
}
static VALUE rb_gsl_sf_complex_cos_e(int argc, VALUE *argv, VALUE obj)
{
return rb_gsl_sf_complex_XXX_e(argc, argv, obj, gsl_sf_complex_cos_e);
}
static VALUE rb_gsl_sf_complex_logsin_e(int argc, VALUE *argv, VALUE obj)
{
return rb_gsl_sf_complex_XXX_e(argc, argv, obj, gsl_sf_complex_logsin_e);
}
static VALUE rb_gsl_sf_lnsinh(VALUE obj, VALUE x)
{
return rb_gsl_sf_eval1(gsl_sf_lnsinh, x);
}
static VALUE rb_gsl_sf_lnsinh_e(VALUE obj, VALUE x)
{
return rb_gsl_sf_eval_e(gsl_sf_lnsinh_e, x);
}
static VALUE rb_gsl_sf_lncosh(VALUE obj, VALUE x)
{
return rb_gsl_sf_eval1(gsl_sf_lncosh, x);
}
static VALUE rb_gsl_sf_lncosh_e(VALUE obj, VALUE x)
{
return rb_gsl_sf_eval_e(gsl_sf_lncosh_e, x);
}
static VALUE rb_gsl_sf_polar_to_rect(int argc, VALUE *argv, VALUE obj)
{
return rb_gsl_sf_complex_XXX_e(argc, argv, obj, gsl_sf_polar_to_rect);
}
static VALUE rb_gsl_sf_rect_to_polar(int argc, VALUE *argv, VALUE obj)
{
return rb_gsl_sf_complex_XXX_e(argc, argv, obj, gsl_sf_rect_to_polar);
}
static VALUE rb_gsl_sf_angle_restrict_symm(VALUE obj, VALUE theta)
{
return rb_gsl_sf_eval1(gsl_sf_angle_restrict_symm, theta);
}
static VALUE rb_gsl_sf_angle_restrict_pos(VALUE obj, VALUE theta)
{
return rb_gsl_sf_eval1(gsl_sf_angle_restrict_pos, theta);
}
/*
static VALUE rb_gsl_sf_sin_err(VALUE obj, VALUE x, VALUE dx)
{
return rb_float_new(gsl_sf_sin_err(NUM2DBL(x), NUM2DBL(dx)));
}
static VALUE rb_gsl_sf_cos_err(VALUE obj, VALUE x, VALUE dx)
{
return rb_float_new(gsl_sf_cos_err(NUM2DBL(x), NUM2DBL(dx)));
}
*/
static VALUE rb_gsl_sf_sin_err_e(VALUE obj, VALUE x, VALUE dx)
{
gsl_sf_result *rslt = NULL;
VALUE v;
// local variable "status" declared and set, but never used
//int status;
Need_Float(x);
Need_Float(dx);
v = Data_Make_Struct(cgsl_sf_result, gsl_sf_result, 0, free, rslt);
/*status =*/ gsl_sf_sin_err_e(NUM2DBL(x), NUM2DBL(dx), rslt);
return v;
}
static VALUE rb_gsl_sf_cos_err_e(VALUE obj, VALUE x, VALUE dx)
{
gsl_sf_result *rslt = NULL;
VALUE v;
// local variable "status" declared and set, but never used
//int status;
Need_Float(x);
Need_Float(dx);
v = Data_Make_Struct(cgsl_sf_result, gsl_sf_result, 0, free, rslt);
/*status =*/ gsl_sf_cos_err_e(NUM2DBL(x), NUM2DBL(dx), rslt);
return v;
}
void Init_gsl_sf_trigonometric(VALUE module)
{
rb_define_module_function(module, "sin", rb_gsl_sf_sin, 1);
rb_define_module_function(module, "sin_e", rb_gsl_sf_sin_e, 1);
rb_define_module_function(module, "cos", rb_gsl_sf_cos, 1);
rb_define_module_function(module, "cos_e", rb_gsl_sf_cos_e, 1);
rb_define_module_function(module, "hypot", rb_gsl_sf_hypot, 2);
rb_define_module_function(module, "hypot_e", rb_gsl_sf_hypot_e, 2);
rb_define_module_function(module, "sinc", rb_gsl_sf_sinc, 1);
rb_define_module_function(module, "sinc_e", rb_gsl_sf_sinc_e, 1);
rb_define_module_function(module, "complex_sin_e", rb_gsl_sf_complex_sin_e, -1);
rb_define_module_function(module, "complex_cos_e", rb_gsl_sf_complex_cos_e, -1);
rb_define_module_function(module, "complex_logsin_e", rb_gsl_sf_complex_logsin_e, -1);
rb_define_module_function(module, "lnsinh", rb_gsl_sf_lnsinh, 1);
rb_define_module_function(module, "lnsinh_e", rb_gsl_sf_lnsinh_e, 1);
rb_define_module_function(module, "lncosh", rb_gsl_sf_lncosh, 1);
rb_define_module_function(module, "lncosh_e", rb_gsl_sf_lncosh_e, 1);
rb_define_module_function(module, "polar_to_rect", rb_gsl_sf_polar_to_rect, -1);
rb_define_module_function(module, "rect_to_polar", rb_gsl_sf_rect_to_polar, -1);
rb_define_module_function(module, "angle_restrict_symm", rb_gsl_sf_angle_restrict_symm, 1);
rb_define_module_function(module, "angle_restrict_pos", rb_gsl_sf_angle_restrict_pos, 1);
/* rb_define_module_function(module, "sin_err", rb_gsl_sf_sin_err, 2);
rb_define_module_function(module, "cos_err", rb_gsl_sf_cos_err, 2);*/
rb_define_module_function(module, "sin_err_e", rb_gsl_sf_sin_err_e, 2);
rb_define_module_function(module, "cos_err_e", rb_gsl_sf_cos_err_e, 2);
}
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