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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@28771 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
11 lines
158 B
C
11 lines
158 B
C
#include "ruby/missing.h"
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#include <math.h>
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double cbrt(double x)
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{
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if (x < 0)
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return -pow(-x, 1/3.0);
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else
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return pow(x, 1/3.0);
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}
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