Intel® Fortran Compiler Classic and Intel® Fortran Compiler Developer Guide and Reference

ID 767251
Date 3/22/2024
Public

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Document Table of Contents

AINT

Elemental Intrinsic Function (Generic): Truncates a value to a whole number.

result = AINT (a [,kind])

a

(Input) Must be of type real.

kind

(Input; optional) Must be a scalar integer constant expression.

Results

The result type is real. If kind is present, the kind parameter of the result is that specified by kind; otherwise, the kind parameter is that of a.

The result is defined as the largest integer whose magnitude does not exceed the magnitude of a and whose sign is the same as that of a. If | a | is less than 1, AINT( a) has the value zero.

Specific Name

Argument Type

Result Type

AINT 1

REAL(4)

REAL(4)

DINT 1

REAL(8)

REAL(8)

QINT

REAL(16)

REAL(16)

1The setting of compiler options specifying real size can affect AINT and DINT.

To round rather than truncate, use ANINT.

Example

AINT (3.678) has the value 3.0.

AINT (-1.375) has the value -1.0.

REAL r1, r2
REAL(8) r3(2)
r1 = AINT(2.6)   ! returns the value 2.0
r2 = AINT(-2.6)  ! returns the value -2.0
r3 = AINT((/1.3, 1.9/), KIND = 8)       ! returns the values
                                        ! (1.0D0, 1.0D0)

See Also