picrin/contrib/10.math/math.c

162 lines
2.8 KiB
C
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#include "picrin.h"
static pic_value
pic_number_finite_p(pic_state *pic)
{
pic_value v;
pic_get_args(pic, "o", &v);
if (pic_int_p(v))
return pic_true_value();
if (pic_float_p(v) && ! (isinf(pic_float(v)) || isnan(pic_float(v))))
return pic_true_value();
else
return pic_false_value();
}
static pic_value
pic_number_infinite_p(pic_state *pic)
{
pic_value v;
pic_get_args(pic, "o", &v);
if (pic_float_p(v) && isinf(pic_float(v)))
return pic_true_value();
else
return pic_false_value();
}
static pic_value
pic_number_nan_p(pic_state *pic)
{
pic_value v;
pic_get_args(pic, "o", &v);
if (pic_float_p(v) && isnan(pic_float(v)))
return pic_true_value();
else
return pic_false_value();
}
static pic_value
pic_number_exp(pic_state *pic)
{
double f;
pic_get_args(pic, "f", &f);
return pic_float_value(exp(f));
}
static pic_value
pic_number_log(pic_state *pic)
{
double f,g;
int argc;
argc = pic_get_args(pic, "f|f", &f, &g);
if (argc == 1) {
return pic_float_value(log(f));
}
else {
return pic_float_value(log(f) / log(g));
}
}
static pic_value
pic_number_sin(pic_state *pic)
{
double f;
pic_get_args(pic, "f", &f);
f = sin(f);
return pic_float_value(f);
}
static pic_value
pic_number_cos(pic_state *pic)
{
double f;
pic_get_args(pic, "f", &f);
f = cos(f);
return pic_float_value(f);
}
static pic_value
pic_number_tan(pic_state *pic)
{
double f;
pic_get_args(pic, "f", &f);
f = tan(f);
return pic_float_value(f);
}
static pic_value
pic_number_acos(pic_state *pic)
{
double f;
pic_get_args(pic, "f", &f);
f = acos(f);
return pic_float_value(f);
}
static pic_value
pic_number_asin(pic_state *pic)
{
double f;
pic_get_args(pic, "f", &f);
f = asin(f);
return pic_float_value(f);
}
static pic_value
pic_number_atan(pic_state *pic)
{
double f,g;
int argc;
argc = pic_get_args(pic, "f|f", &f, &g);
if (argc == 1) {
f = atan(f);
return pic_float_value(f);
}
else {
return pic_float_value(atan2(f,g));
}
}
static pic_value
pic_number_sqrt(pic_state *pic)
{
double f;
pic_get_args(pic, "f", &f);
return pic_float_value(sqrt(f));
}
void
pic_init_math(pic_state *pic)
{
pic_deflibrary (pic, "(picrin number)") {
pic_defun(pic, "finite?", pic_number_finite_p);
pic_defun(pic, "infinite?", pic_number_infinite_p);
pic_defun(pic, "nan?", pic_number_nan_p);
pic_defun(pic, "sqrt", pic_number_sqrt);
pic_defun(pic, "exp", pic_number_exp);
pic_defun(pic, "log", pic_number_log);
pic_defun(pic, "sin", pic_number_sin);
pic_defun(pic, "cos", pic_number_cos);
pic_defun(pic, "tan", pic_number_tan);
pic_defun(pic, "acos", pic_number_acos);
pic_defun(pic, "asin", pic_number_asin);
pic_defun(pic, "atan", pic_number_atan);
}
}