view Python/hypot.c @ 22200:dab05ab0347b legacy-trunk

Docstring for filter(): Someone on the Tutor list reasonably complained that it didn't tell enough of the truth. Bugfix candidate (I guess -- it helps and it's harmless).
author Tim Peters <tim.peters@gmail.com>
date Sat, 09 Mar 2002 00:06:26 +0000
parents 2dea40e40d9d
children 7bc4cc972b0b
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/* 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);
	}
}