Next: MOVE_ALLOC, Previous: MOD, Up: Intrinsic Procedures

### 8.201 `MODULO` — Modulo function

Description:
  `MODULO(A,P)` computes the A modulo P.
Standard:
  Fortran 95 and later
Class:
  Elemental function
Syntax:
  `RESULT = MODULO(A, P)`
Arguments:

  A | Shall be a scalar of type `INTEGER` or `REAL`.
  P | Shall be a scalar of the same type and kind as A. It shall not be zero. (As a GNU extension, arguments of different kinds are permitted.)

Return value:
  The type and kind of the result are those of the arguments. (As a GNU extension, kind is the largest kind of the actual arguments.)
  If A and P are of type `INTEGER`:
    `MODULO(A,P)` has the value R such that `A=Q*P+R`, where Q is an integer and R is between 0 (inclusive) and P (exclusive).
  If A and P are of type `REAL`:
    `MODULO(A,P)` has the value of `A - FLOOR (A / P) * P`.
  The returned value has the same sign as P and a magnitude less than the magnitude of P.
Example:

                program test_modulo
                  print *, modulo(17,3)
                  print *, modulo(17.5,5.5)

                  print *, modulo(-17,3)
                  print *, modulo(-17.5,5.5)

                  print *, modulo(17,-3)
                  print *, modulo(17.5,-5.5)
                end program

See also:
  MOD