ceil() returns the smallest floating-point number of integral
value greater than or equal to x.
Entry-Point Names
Generic
Function Data Type OpenVMS Tru64 UNIX
Name Required
ceil S_FLOAT math$ceil_s ceilf
T_FLOAT math$ceil_t ceil
X_FLOAT math$ceil_x ceill
F_FLOAT math$ceil_f
G_FLOAT math$ceil_g