### 8.166 `MAXLOC` — Location of the maximum value within an array

Description:
  Determines the location of the element in the array with the maximum value, or, if the DIM argument is supplied, determines the locations of the maximum element along each row of the array in the DIM direction. If MASK is present, only the elements for which MASK is `.TRUE.` are considered. If more than one element in the array has the maximum value, the location returned is that of the first such element in array element order. If the array has zero size, or all of the elements of MASK are `.FALSE.`, then the result is an array of zeroes. Similarly, if DIM is supplied and all of the elements of MASK along a given row are zero, the result value for that row is zero.
Standard:
  Fortran 95 and later
Class:
  Transformational function
Syntax:

  `RESULT = MAXLOC(ARRAY, DIM [, MASK])`
  `RESULT = MAXLOC(ARRAY [, MASK])`

Arguments:

  ARRAY | Shall be an array of type `INTEGER` or `REAL`.
  DIM | (Optional) Shall be a scalar of type `INTEGER`, with a value between one and the rank of ARRAY, inclusive. It may not be an optional dummy argument.
  MASK | Shall be an array of type `LOGICAL`, and conformable with ARRAY.

Return value:
  If DIM is absent, the result is a rank-one array with a length equal to the rank of ARRAY. If DIM is present, the result is an array with a rank one less than the rank of ARRAY, and a size corresponding to the size of ARRAY with the DIM dimension removed. If DIM is present and ARRAY has a rank of one, the result is a scalar. In all cases, the result is of default `INTEGER` type.
See also:
  MAX, MAXVAL