v?Log10

Developer Reference for Intel® oneAPI Math Kernel Library for Fortran

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ID 766686

Date 10/31/2024

Version

Public

Visible to Intel only — GUID: GUID-E9280987-D5DF-4B8B-A344-0141E8CDC6E1

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v?Log10

Computes the base 10 logarithm of vector elements.

Syntax

call vslog10( n, a, y )

call vslog10i(n, a, inca, y, incy)

call vmslog10( n, a, y, mode )

call vmslog10i(n, a, inca, y, incy, mode)

call vdlog10( n, a, y )

call vdlog10i(n, a, inca, y, incy)

call vmdlog10( n, a, y, mode )

call vmdlog10i(n, a, inca, y, incy, mode)

call vclog10( n, a, y )

call vclog10i(n, a, inca, y, incy)

call vmclog10( n, a, y, mode )

call vmclog10i(n, a, inca, y, incy, mode)

call vzlog10( n, a, y )

call vzlog10i(n, a, inca, y, incy)

call vmzlog10( n, a, y, mode )

call vmzlog10i(n, a, inca, y, incy, 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 vdlog10, vmdlog10 COMPLEX for vclog10, vmclog10 DOUBLE COMPLEX for vzlog10, vmzlog10 REAL, INTENT(IN) for vslog10, vmslog10 DOUBLE PRECISION, INTENT(IN) for vdlog10, vmdlog10 COMPLEX, INTENT(IN) for vclog10, vmclog10 DOUBLE COMPLEX, INTENT(IN) for vzlog10, vmzlog10	Array that specifies the input vector a.
inca, incy	INTEGER, INTENT(IN)	Specifies increments for the elements of `a` and `y`.
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	DOUBLE PRECISION for vdlog10, vmdlog10 COMPLEX for vclog10, vmclog10 DOUBLE COMPLEX for vzlog10, vmzlog10 REAL, INTENT(OUT) for vslog10, vmslog10 DOUBLE PRECISION, INTENT(OUT) for vdlog10, vmdlog10 COMPLEX, INTENT(OUT) for vclog10, vmclog10 DOUBLE COMPLEX, INTENT(OUT) for vzlog10, vmzlog10	Array that specifies the output vector y.

Name

Type

Description

DOUBLE PRECISION for vdlog10, vmdlog10

COMPLEX for vclog10, vmclog10

DOUBLE COMPLEX for vzlog10, vmzlog10

REAL, INTENT(OUT) for vslog10, vmslog10

DOUBLE PRECISION, INTENT(OUT) for vdlog10, vmdlog10

COMPLEX, INTENT(OUT) for vclog10, vmclog10

DOUBLE COMPLEX, INTENT(OUT) for vzlog10, vmzlog10

Array that specifies the output vector y.

Description

The v?Log10 function computes the base 10 logarithm of vector elements.

Special Values for Real Function v?Log10(x)
Argument	Result	VM Error Status	Exception
+1	+0
X < +0	QNAN	VML_STATUS_ERRDOM	INVALID
+0	-∞	VML_STATUS_SING	ZERODIVIDE
-0	-∞	VML_STATUS_SING	ZERODIVIDE
-∞	QNAN	VML_STATUS_ERRDOM	INVALID
+∞	+∞
QNAN	QNAN
SNAN	QNAN		INVALID

See Special Value Notations for the conventions used in the table below.

Special Values for Complex Function v?Log10(z)
RE(z) i·IM(z)	-∞	-X	-0	+0	+X	+∞	NAN
+i·∞							+∞+i·QNAN INVALID
+i·Y						+∞+i·0	QNAN+i·QNAN INVALID
+i·0			ZERODIVIDE	-∞+i·0 ZERODIVIDE		+∞+i·0	QNAN+i·QNAN INVALID
-i·0			ZERODIVIDE	-∞-i·0 ZERODIVIDE		+∞-i·0	QNAN-i·QNAN INVALID
-i·Y						+∞-i·0	QNAN+i·QNAN INVALID
-i·∞							+∞+i·QNAN
+i·NAN	+∞+i·QNAN	QNAN+i·QNAN INVALID	QNAN+i·QNAN INVALID	QNAN+i·QNAN INVALID	QNAN+i·QNAN INVALID	+∞+i·QNAN	QNAN+i·QNAN INVALID