NAME

nextafter, nextafterf, nextafterl, nexttoward, nexttowardf, nexttowardl — next representable value

SYNOPSIS

Math Library (libm, -lm)
#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);

These functions return the next machine representable number from x in direction y. If x equals y, these functions return y.

IEEE Std 754-1985

The nextafter and nextafterf functions appeared in 4.3BSD and NetBSD 1.1, respectively.