pred

The predecessor function.

Syntax

• pred(n[, m[, d]])

  • n is an integer

  • m is a positive integer

  • d is an integer

Description

• If n is an integer, then pred(n) is the previous integer, i.e., n − 1.

• If, in addition, m is a positive integer, then pred(n, m) is the previous integer modulo m, i.e., (n − 1) mod m.

• If, in addition, d is an integer, then pred(n, m, d) is the previous integer modulo m in the translated interval [d, d + m).

Examples

pred(5)

4

pred(0, 3)

2

pred(5, 3, 4)

4

pred(4, 3, 4)

6

See also

• succ

• dec