File: hypot.c

package info (click to toggle)
ruby2.1 2.1.5-2
  • links: PTS, VCS
  • area: main
  • in suites: jessie-kfreebsd
  • size: 59,972 kB
  • sloc: ruby: 625,579; ansic: 295,220; xml: 25,445; yacc: 9,155; lisp: 2,433; tcl: 949; makefile: 535; sh: 402; perl: 62; python: 47; awk: 36; asm: 35; sed: 31
file content (17 lines) | stat: -rw-r--r-- 293 bytes parent folder | download | duplicates (10) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
 
/* public domain rewrite of hypot */

#include "ruby/missing.h"
#include <math.h>

double hypot(double x, double y)
{
    if (x < 0) x = -x;
    if (y < 0) y = -y;
    if (x < y) {
	double tmp = x;
	x = y; y = tmp;
    }
    if (y == 0.0) return x;
    y /= x;
    return x * sqrt(1.0+y*y);
}