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8.77 DIM — Positive difference

Description:
DIM(X,Y) returns the difference X-Y if the result is positive; otherwise returns zero.
Standard:
Fortran 77 and later
Class:
Elemental function
Syntax:
RESULT = DIM(X, Y)
Arguments:

X The type shall be INTEGER or REAL
Y The type shall be the same type and kind as X.

Return value:
The return value is of type INTEGER or REAL.
Example:
          program test_dim
              integer :: i
              real(8) :: x
              i = dim(4, 15)
              x = dim(4.345_8, 2.111_8)
              print *, i
              print *, x
          end program test_dim

Specific names:

Name Argument Return type Standard
DIM(X,Y) REAL(4) X, Y REAL(4) Fortran 77 and later
IDIM(X,Y) INTEGER(4) X, Y INTEGER(4) Fortran 77 and later
DDIM(X,Y) REAL(8) X, Y REAL(8) Fortran 77 and later