Ruby  2.7.0p0(2019-12-25revision647ee6f091eafcce70ffb75ddf7e121e192ab217)
hypot.c
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1 /* public domain rewrite of hypot */
2 
3 #include "ruby/missing.h"
4 #include <math.h>
5 
6 double hypot(double x, double y)
7 {
8  if (x < 0) x = -x;
9  if (y < 0) y = -y;
10  if (x < y) {
11  double tmp = x;
12  x = y; y = tmp;
13  }
14  if (y == 0.0) return x;
15  y /= x;
16  return x * sqrt(1.0+y*y);
17 }
sqrt
double sqrt(double)
missing.h
hypot
double hypot(double x, double y)
Definition: hypot.c:6