NEXTAFTER(3) | FreeBSD Library Functions Manual | NEXTAFTER(3) |
NAME
nextafter, nextafterf, nextafterl, nexttoward, nexttowardf, nexttowardl — next representable valueLIBRARY
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.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.May 4, 2005 | FreeBSD |