nextafter man page on Darwin

nextafter man page on Darwin

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NEXTAFTER(3)		 BSD Library Functions Manual		  NEXTAFTER(3)

NAME
     nextafter

SYNOPSIS
     #include <math.h>

     double
     nextafter(double x, double y);

     long double
     nextafterl(long double x, long double y);

     float
     nextafterf(float x, float y);

DESCRIPTION
     The nextafter() functions return the next machine representable number
     from x in direction y.

SPECIAL VALUES
     nextafter(x, y) raises the "overflow" and "inexact" floating-point excep‐
     tions for x finite and the function value infinite.

     nextafter(x, y) raises the "underflow" and "inexact" floating-point
     exceptions for the function value subnormal or zero and x not equal to y.

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

     #include <Accelerate/Accelerate.h>

     vFloat vnextafterf(vFloat x, vFloat y);
     void vvnextafterf(float *z, const float *y, const float *x, const int
     *n);
     void vvnextafter(double *z, const double *y, const double *x, const int
     *n);

SEE ALSO
     math(3)

STANDARDS
     The nextafter() functions conform to ISO/IEC 9899:2011.

BSD			       December 11, 2006			   BSD

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