Developer Reference for Intel® oneAPI Math Kernel Library for Fortran

ID 766686
Date 3/22/2024
Public

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Document Table of Contents

v?Modf

Computes a truncated integer value and the remaining fraction part for each vector element.

Syntax

call vsmodf( n, a, y, z )

call vsmodfi(n, a, inca, y, incy, z, incz)

call vmsmodf( n, a, y, z, mode )

call vmsmodfi(n, a, inca, y, incy, z, incz, mode)

call vdmodf( n, a, y, z )

call vdmodfi(n, a, inca, y, incy, z, incz)

call vmdmodf( n, a, y, z, mode )

call vmdmodfi(n, a, inca, y, incy, z, incz, mode)

Include Files

  • mkl_vml.f90

Input Parameters

Name

Type

Description

n

INTEGER, INTENT(IN)

Specifies the number of elements to be calculated.

a

DOUBLE PRECISION for vdmodf, vmdmodf

REAL, INTENT(IN) for vsmodf, vmsmodf

DOUBLE PRECISION, INTENT(IN) for vdmodf, vmdmodf

Array, specifies the input vector a.

inca, incy, incz

INTEGER, INTENT(IN)

Specifies increments for the elements of a, y, and z.

mode

INTEGER(KIND=8), INTENT(IN)

Overrides global VM mode setting for this function call. See vmlSetMode for possible values and their description.

Output Parameters

Name

Type

Description

y, z

DOUBLE PRECISION for vdmodf, vmdmodf

REAL, INTENT(OUT) for vsmodf, vmsmodf

DOUBLE PRECISION, INTENT(OUT) for vdmodf, vmdmodf

Array, specifies the output vector y and z.

Description

The function computes a truncated integer value and the remaining fraction part for each vector element.



Special Values for Real Function v?Modf(x)
Argument Result: y(i) Result: z(i) Exception
+0 +0 +0  
-0 -0 -0  
+ + +0  
- - -0  
SNAN QNAN QNAN INVALID
QNAN QNAN QNAN