view Python/hypot.c @ 73244:b48e1b48e670 2.5

2.5 is no longer maintained
author Martin v. Löwis <martin@v.loewis.de>
date Mon, 31 Oct 2011 12:38:50 +0100
parents 2dea40e40d9d
children 7bc4cc972b0b
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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);
	}
}