sqrt man page on MacOSX

sqrt man page on MacOSX

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SQRT(3)			 BSD Library Functions Manual		       SQRT(3)

NAME
     sqrt — square root function

SYNOPSIS
     #include <math.h>

     double
     sqrt(double x);

     long double
     sqrtl(long double x);

     float
     sqrtf(float x);

DESCRIPTION
     The sqrt() function compute the non-negative square root of x.

SPECIAL VALUES
     sqrt(-0) returns -0.

     sqrt(x) returns a NaN and generates a domain error for x < 0.

VECTOR OPERATIONS
     If you need to apply the sqrt() function to SIMD vectors or arrays, using
     the following functions provided by the Accelerate.framework may give
     significantly better performance:

     #include <Accelerate/Accelerate.h>

     vFloat vsqrtf(vFloat x);
     vFloat vrsqrtf(vFloat x);
     void vvsqrtf(float *y, const float *x, const int *n);
     void vvsqrt(double *y, const double *x, const int *n);
     void vvrsqrtf(float *y, const float *x, const int *n);
     void vvrsqrt(double *y, const double *x, const int *n);

SEE ALSO
     math(3)

STANDARDS
     The sqrt() function conforms to ISO/IEC 9899:2011.

BSD			       December 11, 2006			   BSD

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