Developer Reference for Intel® oneAPI Math Kernel Library for C

ID 766684
Date 3/22/2024
Public

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Document Table of Contents

v?Log10

Computes the base 10 logarithm of vector elements.

Syntax

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);

Include Files

  • mkl.h

Input Parameters

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.

Output Parameters

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.

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

Notes:

  • raises INVALID exception when real or imaginary part of the argument is SNAN