NEXTAFTER(3)

NAME
nextafter

SYNOPSIS
#include <math.h>
double
nextafter(double x, double y);
long double
nextafterl(long double x, long double y);
float
nextafterf(float x, float y);

DESCRIPTION
The nextafter() functions return the next machine representable number from x in direction y.

SPECIAL VALUES
nextafter(x, y) raises the "overflow" and "inexact" floating-point exceptions for x finite and the function value infinite.

nextafter(x, y) raises the "underflow" and "inexact" floating-point exceptions for the function value subnormal or zero and x not equal to y.

SEE ALSO
math(3)

STANDARDS
The nextafter() functions conform to ISO/IEC 9899:1999(E).