view Python/hypot.c @ 20903:bfcc2ed9caba legacy-trunk

Add a regression test for SF bug #478536: If a value cannot be weakly referenced, WeakKeyDictionary.has_key() should return 0 instead of raising TypeError.
author Fred Drake <fdrake@acm.org>
date Tue, 06 Nov 2001 16:38:34 +0000
parents 2dea40e40d9d
children 7bc4cc972b0b
line wrap: on
line source

/* hypot() replacement */

#include "pyconfig.h"
#include "pyport.h"

double hypot(double x, double y)
{
	double yx;

	x = fabs(x);
	y = fabs(y);
	if (x < y) {
		double temp = x;
		x = y;
		y = temp;
	}
	if (x == 0.)
		return 0.;
	else {
		yx = y/x;
		return x*sqrt(1.+yx*yx);
	}
}