https://github.com/python/cpython
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Tip revision: ec2aed66177f8d74346d85ea42841ae538725d6e authored by Martin v. Löwis on 31 January 2010, 12:38:29 UTC
Prepare for 2.5.5.
Tip revision: ec2aed6
hypot.c
/* 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);
	}
}
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