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sqrt, sqrtf
[positive square root]

SYNOPSIS

    #include <math.h>
    double sqrt(double x);
    float sqrtf(float x);

DESCRIPTION

sqrt computes the positive square root of the argument. You can modify error handling for this function with matherr.

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).

COMPLIANCE

sqrt is ANSI C. sqrtf is an extension.