hash()
public
Returns a hash code for this float.
/*
* call-seq:
* flt.hash => integer
*
* Returns a hash code for this float.
*/
static VALUE
flo_hash(num)
VALUE num;
{
double d;
char *c;
int i, hash;
d = RFLOAT(num)->value;
if (d == 0) d = fabs(d);
c = (char*)&d;
for (hash=0, i=0; i<sizeof(double);i++) {
hash = (hash * 971) ^ (unsigned char)c[i];
}
if (hash < 0) hash = -hash;
return INT2FIX(hash);
}