Contents

v?Round

Computes a value rounded to the nearest integer for each vector element.

Syntax

vsRound
(
n
,
a
,
y
)
;
vmsRound
(
n
,
a
,
y
,
mode
)
;
vdRound
(
n
,
a
,
y
)
;
vmdRound
(
n
,
a
,
y
,
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
vsRound
,
vmsRound
const double*
for
vdRound
,
vmdRound
Pointer to an array that contains the input vector
a
.
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
vsRound
,
vmsRound
double*
for
vdRound
,
vmdRound
Pointer to an array that contains the output vector
y
.
Description
The function computes a value rounded to the nearest integer for each vector element. Input elements that are halfway between two consecutive integers are always rounded away from zero regardless of the rounding mode.
Special Values for Real Function
v?Round(x)
Argument
Result
Exception
+0
+0
 
-0
-0
 
+
+
 
-
-
 
SNAN
QNAN
INVALID
QNAN
QNAN
 

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 reservered 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