DragonFly On-Line Manual Pages


NEXTAFTER(3)	      DragonFly 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. DragonFly 3.9 December 21, 2011 DragonFly 3.9