Developer Reference for Intel® oneAPI Math Kernel Library - C

Developer Reference

  • 0.10
  • 10/21/2020
  • Public Content
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

Product and Performance Information

1

Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserverd for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.

Notice revision #20110804