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/************************************************
math.c -
$Author: matz $
$Date: 1994/06/17 14:23:50 $
created at: Tue Jan 25 14:12:56 JST 1994
Copyright (C) 1994 Yukihiro Matsumoto
************************************************/
#include "ruby.h"
#include <math.h>
VALUE M_Math;
VALUE float_new();
#define Need_Float(x) \
if (FIXNUM_P(x)) {\
(x) = (struct RFloat*)float_new((double)FIX2INT(x));\
} else {\
Check_Type(x, T_FLOAT);\
}
#define Need_Float2(x,y) {\
Need_Float(x);\
Need_Float(y);\
}
static VALUE
Fmath_atan2(obj, x, y)
VALUE obj;
struct RFloat *x, *y;
{
Need_Float2(x, y);
return float_new(atan2(x->value, x->value));
}
static VALUE
Fmath_cos(obj, x)
VALUE obj;
struct RFloat *x;
{
Need_Float(x);
return float_new(cos(x->value));
}
static VALUE
Fmath_sin(obj, x)
VALUE obj;
struct RFloat *x;
{
Need_Float(x);
return float_new(sin(x->value));
}
static VALUE
Fmath_tan(obj, x)
VALUE obj;
struct RFloat *x;
{
Need_Float(x);
return float_new(tan(x->value));
}
static VALUE
Fmath_exp(obj, x)
VALUE obj;
struct RFloat *x;
{
Need_Float(x);
return float_new(exp(x->value));
}
static VALUE
Fmath_log(obj, x)
VALUE obj;
struct RFloat *x;
{
Need_Float(x);
return float_new(log(x->value));
}
static VALUE
Fmath_log10(obj, x)
VALUE obj;
struct RFloat *x;
{
Need_Float(x);
return float_new(log10(x->value));
}
static VALUE
Fmath_sqrt(obj, x)
VALUE obj;
struct RFloat *x;
{
Need_Float(x);
return float_new(log10(x->value));
if (x->value < 0.0) Fail("square root for negative number");
return float_new(sqrt(x->value));
}
Init_Math()
{
M_Math = rb_define_module("Math");
rb_define_mfunc(M_Math, "atan2", Fmath_atan2, 2);
rb_define_mfunc(M_Math, "cos", Fmath_cos, 1);
rb_define_mfunc(M_Math, "sin", Fmath_sin, 1);
rb_define_mfunc(M_Math, "tan", Fmath_tan, 1);
rb_define_mfunc(M_Math, "exp", Fmath_exp, 1);
rb_define_mfunc(M_Math, "log", Fmath_log, 1);
rb_define_mfunc(M_Math, "log10", Fmath_log10, 1);
rb_define_mfunc(M_Math, "sqrt", Fmath_sqrt, 1);
}
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