view Python/hypot.c @ 28383:f99cf9bfbbaf legacy-trunk

Include Python.h first which defines _XOPEN_SOURCE which allows the file to compile and removes a warning about _XOPEN_SOURCE being redefined (works on AIX 4.3 and 5.1 at least).
author Neal Norwitz <nnorwitz@gmail.com>
date Sat, 22 Mar 2003 16:35:37 +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);
	}
}