v?Log10

Developer Reference for Intel® oneAPI Math Kernel Library for C

Download PDF

ID 766684

Date 3/22/2024

Version

Public

A newer version of this document is available. Customers should click here to go to the newest version.

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

Computes the base 10 logarithm of vector elements.

vsLog10( n, a, y );

vsLog10I(n, a, inca, y, incy);

vmsLog10( n, a, y, mode );

vmsLog10I(n, a, inca, y, incy, mode);

vdLog10( n, a, y );

vdLog10I(n, a, inca, y, incy);

vmdLog10( n, a, y, mode );

vmdLog10I(n, a, inca, y, incy, mode);

vcLog10( n, a, y );

vcLog10I(n, a, inca, y, incy);

vmcLog10( n, a, y, mode );

vmcLog10I(n, a, inca, y, incy, mode);

vzLog10( n, a, y );

vzLog10I(n, a, inca, y, incy);

vmzLog10( n, a, y, mode );

vmzLog10I(n, a, inca, y, incy, mode);

Name	Type	Description
n	const MKL_INT	Specifies the number of elements to be calculated.
a	const float* for vsLog10, vmsLog10 const double* for vdLog10, vmdLog10 const MKL_Complex8* for vcLog10, vmcLog10 const MKL_Complex16* for vzLog10, vmzLog10	Pointer to an array that contains the input vector a.
inca, incy	const MKL_INT	Specifies increments for the elements of `a` and `y`.
mode	const MKL_INT64	Overrides global VM mode setting for this function call. See vmlSetMode for possible values and their description.

Name	Type	Description
y	float* for vsLog10, vmsLog10 double* for vdLog10, vmdLog10 MKL_Complex8* for vcLog10, vmcLog10 MKL_Complex16* for vzLog10, vmzLog10	Pointer to an array that contains the output vector y.

Name

Type

Description

float* for vsLog10, vmsLog10

double* for vdLog10, vmdLog10

MKL_Complex8* for vcLog10, vmcLog10

MKL_Complex16* for vzLog10, vmzLog10

Pointer to an array that contains the output vector y.

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