nextafter() returns the machine-representable number next to x in
the direction y.
Entry-Point Names
Generic
Function Data Type OpenVMS Tru64 UNIX
Name Required
nextafter S_FLOAT math$nextafter_s nextafterf
T_FLOAT math$nextafter_t nextafter
X_FLOAT math$nextafter_x nextafterl
F_FLOAT math$nextafter_f
G_FLOAT math$nextafter_g