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/*
ieee.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.h"
static VALUE rb_gsl_ieee_env_setup(VALUE obj)
{
gsl_ieee_env_setup();
return obj;
}
static VALUE rb_gsl_ieee_fprintf_double(int argc, VALUE *argv, VALUE obj)
{
rb_io_t *fptr = NULL;
FILE *fp = NULL;
int flag = 0;
VALUE vtmp;
double ftmp;
switch (argc) {
case 2:
switch (TYPE(argv[0])) {
case T_STRING:
fp = fopen(RSTRING_PTR(argv[0]), "w");
flag = 1;
break;
case T_FILE:
GetOpenFile(argv[0], fptr);
rb_io_check_writable(fptr);
fp = rb_io_stdio_file(fptr);
break;
default:
rb_raise(rb_eTypeError, "wrong type argument %s (IO or String expected)",
rb_class2name(CLASS_OF(argv[0])));
}
vtmp = argv[1];
break;
case 1:
vtmp = argv[0];
fp = stdout;
break;
default:
rb_raise(rb_eArgError, "wrong number of arguments (%d for 1 or 2)", argc);
}
if (TYPE(vtmp) != T_FLOAT)
rb_raise(rb_eTypeError, "wrong argument type %s (Float expected)",
rb_class2name(CLASS_OF(vtmp)));
ftmp = RFLOAT_VALUE(vtmp);
gsl_ieee_fprintf_double(fp, &ftmp);
if (fp == stdout) fprintf(stdout, "\n");
if (flag == 1) fclose(fp);
return obj;
}
static VALUE rb_gsl_ieee_printf_double(VALUE obj, VALUE xx)
{
double x;
x = NUM2DBL(xx);
gsl_ieee_printf_double(&x);
return xx;
}
void Init_gsl_ieee(VALUE module)
{
VALUE mgsl_ieee;
mgsl_ieee = rb_define_module_under(module, "IEEE");
rb_define_singleton_method(mgsl_ieee, "env_setup",
rb_gsl_ieee_env_setup, 0);
rb_define_module_function(module, "ieee_env_setup", rb_gsl_ieee_env_setup, 0);
rb_define_singleton_method(mgsl_ieee, "fprintf_double",
rb_gsl_ieee_fprintf_double, -1);
rb_define_singleton_method(mgsl_ieee, "fprintf",
rb_gsl_ieee_fprintf_double, -1);
rb_define_singleton_method(mgsl_ieee, "printf",
rb_gsl_ieee_printf_double, -1);
rb_define_singleton_method(mgsl_ieee, "printf_double",
rb_gsl_ieee_printf_double, -1);
}
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