Developer Reference

  • 0.10
  • 10/21/2020
  • Public Content
Contents

v?Expm1

Computes an exponential of vector elements decreased by 1.

Syntax

vsExpm1
(
n
,
a
,
y
)
;
vsExpm1I(n, a, inca, y, incy);
vmsExpm1
(
n
,
a
,
y
,
mode
)
;
vmsExpm1I(n, a, inca, y, incy, mode);
vdExpm1
(
n
,
a
,
y
)
;
vdExpm1I(n, a, inca, y, incy);
vmdExpm1
(
n
,
a
,
y
,
mode
)
;
vmdExpm1I(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
vsExpm1
,
vmsExpm1
const double*
for
vdExpm1
,
vmdExpm1
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.
Precision Overflow Thresholds for
Expm1
Function
Data Type
Threshold Limitations on Input Parameters
single precision
a
[i] < Ln( FLT_MAX )
double precision
a
[i] < Ln( DBL_MAX )
Output Parameters
Name
Type
Description
y
float*
for
vsExpm1
,
vmsExpm1
double*
for
vdExpm1
,
vmdExpm1
Pointer to an array that contains the output vector
y
.
Description
The
v?Expm1
function computes an exponential of vector elements decreased by 1.
Special Values for Real Function
v?Expm1(x)
Argument
Result
VM Error Status
Exception
+0
+0
 
 
-0
+0
 
 
X > overflow
+
VML_STATUS_OVERFLOW
OVERFLOW
+
+
 
 
-
-1
 
 
QNAN
QNAN
 
 
SNAN
QNAN
 
INVALID

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