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/GNU Fortran 7

9.108 FLOOR — Integer floor function

Description:

FLOOR(A) returns the greatest integer less than or equal to X.

Standard:

Fortran 95 and later

Class:

Elemental function

Syntax:

RESULT = FLOOR(A [, KIND])

Arguments:
A The type shall be REAL.
KIND (Optional) An INTEGER initialization expression indicating the kind parameter of the result.
Return value:

The return value is of type INTEGER(KIND) if KIND is present and of default-kind INTEGER otherwise.

Example:
program test_floor
    real :: x = 63.29
    real :: y = -63.59
    print *, floor(x) ! returns 63
    print *, floor(y) ! returns -64
end program test_floor
See also:

CEILING, NINT

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Licensed under the GNU Free Documentation License, Version 1.3.
https://gcc.gnu.org/onlinedocs/gcc-7.1.0/gfortran/FLOOR.html