Developer Reference

  • 2021.1
  • 12/04/2020
  • Public Content
Contents

v?Exp2

Computes the base 2 exponential of vector elements.

Syntax

vsExp2
(
n
,
a
,
y
);
vsExp2I(n, a, inca, y, incy);
vmsExp2
(
n
,
a
,
y
,
mode
);
vmsExp2I(n, a, inca, y, incy, mode);
vdExp2
(
n
,
a
,
y
);
vdExp2I(n, a, inca, y, incy);
vmdExp2
(
n
,
a
,
y
,
mode
);
vmdExp2I(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
vsExp2
const float*
for
vmsExp2
const double*
for
vdExp2
const double*
for
vmdExp2
Pointer to the array containing the input vector
a
.
inca
,
incy
const MKL_INT
Specifies increments for the elements of
a
and
y
.
mode
const MKL_INT64
Overrides the global VM
mode
setting for this function call. See
vmlSetMode
for possible values and their description.
Output Parameters
Name
Type
Description
y
float*
for
vsExp2
float*
for
vmsExp2
double*
for
vdExp2
double*
for
vmdExp2
Pointer to an array containing the output vector
y
.
Description
The
v?Exp2
function computes the base 2 exponential of vector elements.
Precision Overflow Thresholds for Real Function
v?Exp2
Data Type
Threshold Limitations on Input Parameters
single precision
a
i
< log
2
(FLT_MAX)
double precision
a
i
< log
2
(DBL_MAX)
See Special Value Notations for the conventions used in this table:
Special values for Real Function
v?Exp2(x)
Argument
Result
VM Error Status
Exception
+0
+1
-0
+1
x
> overflow
+
VML_STATUS_OVERFLOW
OVERFLOW
x
< underflow
+0
VML_STATUS_UNDERFLOW
UNDERFLOW
+
+
-
+0
QNAN
QNAN
SNAN
QNAN
INVALID

Product and Performance Information

1

Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.