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sqrt
, sqrtf
—positive square rootSynopsis
#include <math.h> double sqrt(double x); float sqrtf(float x);
Description
sqrt
computes the positive square root of the argument.
Returns
On success, the square root is returned. If x is real and
positive, then the result is positive. If x is real and
negative, the global value errno
is set to EDOM
(domain error).
Portability
sqrt
is ANSI C. sqrtf
is an extension.