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nextafter(3)

NAME

     nextafter, nextafterf -- next representable value

LIBRARY

     Math Library (libm, -lm)

SYNOPSIS

     #include <math.h>

     double
     nextafter(double x, double y);

     float
     nextafterf(float x, float y);

DESCRIPTION

     nextafter() and nextafterf() return the next machine representable number
     from x in direction y.

SEE ALSO

     ieee(3), math(3)

STANDARDS

     The nextafter() and nextafterf() routines conform to ISO/IEC 9899:1999
     (``ISO C99'').  They implement the Nextafter function recommended by IEEE
     Std 754-1985, with the extension that nextafter(+0.0,, -0.0) returns
     -0.0, and nextafter(-0.0,, +0.0) returns +0.0.

HISTORY

     The nextafter() function appeared in 4.3BSD, and nextafterf() appeared in
     FreeBSD 2.0.

FreeBSD 5.4		       January 26, 2005 		   FreeBSD 5.4

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