Rational Developer for System z
Enterprise PL/I for z/OS, Version 3.8, Language Reference Manual

SUCC

SUCC returns a floating-point value that is the smallest representable number larger than x. It is the base, mode, and precision of x. The OVERFLOW condition is raised if there is no such number.

Read syntax diagramSkip visual syntax diagram>>-SUCC(x)-----------------------------------------------------><
 
x
REAL FLOAT expression.

SUCC satisfies the following relationships:

  pred(succ(x)) = x
  succ(pred(x)) = x
  succ(x)       = -pred(-x)
  succ(0d0)     = tiny(0d0)


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