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8.149 INT — Convert to integer type ¶

Description:

Convert to integer type

Standard:

Fortran 77 and later, with boz-literal-constant Fortran 2008 and later.

Class:

Elemental function

Syntax:

RESULT = INT(A [, KIND))

Arguments:

A	Shall be of type INTEGER, REAL, or COMPLEX or a boz-literal-constant.
KIND	(Optional) A scalar INTEGER constant expression indicating the kind parameter of the result.

Return value:

These functions return a INTEGER variable or array under the following rules:

(A)

If A is of type INTEGER, INT(A) = A

(B)

If A is of type REAL and |A| < 1, INT(A) equals 0. If |A| \geq 1, then INT(A) is the integer whose magnitude is the largest integer that does not exceed the magnitude of A and whose sign is the same as the sign of A.

(C)

If A is of type COMPLEX, rule B is applied to the real part of A.

Example:

program test_int
  integer :: i = 42
  complex :: z = (-3.7, 1.0)
  print *, int(i)
  print *, int(z), int(z,8)
end program

Specific names:

Name	Argument	Return type	Standard
INT(A)	REAL(4) A	INTEGER	Fortran 77 and later
IFIX(A)	REAL(4) A	INTEGER	Fortran 77 and later
IDINT(A)	REAL(8) A	INTEGER	Fortran 77 and later