Sha256: 41b32fe029d241ee21fe2c09babe3ef22c7c6ad5be4b18a92c5d9dd47364dad4
Contents?: true
Size: 641 Bytes
Versions: 7
Compression:
Stored size: 641 Bytes
Contents
#include "xint_macro.h"
#define m_abs(x) ((x<0)?-x:x)
#define m_sign(x) (((x)==0) ? 0 : (((x)>0) ? 1 : -1))
static inline dtype int_reciprocal(dtype x) {
switch (x) {
case 1:
return 1;
case -1:
return -1;
case 0:
rb_raise(rb_eZeroDivError, "divided by 0");
default:
return 0;
}
}
static dtype pow_int(dtype x, int p)
{
dtype r = m_one;
switch(p) {
case 0: return 1;
case 1: return x;
case 2: return x*x;
case 3: return x*x*x;
}
if (p<0) return 0;
while (p) {
if (p&1) r *= x;
x *= x;
p >>= 1;
}
return r;
}
Version data entries
7 entries across 7 versions & 1 rubygems