Developer Reference

Contents

v?Round

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

Syntax

vsRound
(
n
,
a
,
y
)
;
vsRoundI(n, a, inca, y, incy);
vmsRound
(
n
,
a
,
y
,
mode
)
;
vmsRoundI(n, a, inca, y, incy, mode);
vdRound
(
n
,
a
,
y
)
;
vdRoundI(n, a, inca, y, incy);
vmdRound
(
n
,
a
,
y
,
mode
)
;
vmdRoundI(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
vsRound
,
vmsRound
const double*
for
vdRound
,
vmdRound
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
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

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