NEXTAFTER(3)           FreeBSD Library Functions Manual           NEXTAFTER(3)

NAME
     nextafter, nextafterf, nextafterl, nexttoward, nexttowardf, nexttowardl -
     next representable value

LIBRARY
     Math Library (libm, -lm)

SYNOPSIS
     #include <math.h>

     double
     nextafter(double x, double y);

     float
     nextafterf(float x, float y);

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

     double
     nexttoward(double x, long double y);

     float
     nexttowardf(float x, long double y);

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

DESCRIPTION
     These functions return the next machine representable number from x in
     direction y.

SEE ALSO
     ieee(3), math(3)

STANDARDS
     The nextafter(), nextafterf(), nextafterl(), nexttoward(), nexttowardf(),
     and nexttowardl() 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 13.1-RELEASE-p6           May 4, 2005          FreeBSD 13.1-RELEASE-p6