v?Rint
v?Rint
Computes a rounded integer value in the current rounding mode.
Syntax
vsRint
(
n
,
a
,
y
)
;
vsRintI(n, a, inca, y, incy);
vmsRint
(
n
,
a
,
y
,
mode
)
;
vmsRintI(n, a, inca, y, incy, mode);
vdRint
(
n
,
a
,
y
)
;
vdRintI(n, a, inca, y, incy);
vmdRint
(
n
,
a
,
y
,
mode
)
;
vmdRintI(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 vsRint , vmsRint const double* for vdRint , vmdRint | 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 vsRint , vmsRint double* for vdRint , vmdRint | Pointer to an array that contains the output vector y . |
Description
The
v?Rint
function
computes a rounded floating-point integer value using the current rounding mode for each vector element.The rounding mode affects the results computed for inputs that fall between consecutive integers. For example:
- f(0.5) = 0, for rounding modes set to round to nearest round toward zero or to minus infinity.
- f(0.5) = 1, for rounding modes set to plus infinity.
- f(-1.5) = -2, for rounding modes set to round to nearest or to minus infinity.
- f(-1.5) = -1, for rounding modes set to round toward zero or to plus infinity.
Argument | Result | Exception |
|---|---|---|
+0 | +0 | |
-0 | -0 | |
+ ∞ | + ∞ | |
- ∞ | - ∞ | |
SNAN | QNAN | INVALID |
QNAN | QNAN |