v?Acospi
v?Acospi
Computes the inverse cosine of vector elements divided by
π
.Syntax
vsAcospi
(
n
,
a
,
y
);
vsAcospiI(n, a, inca, y, incy);
vmsAcospi
(
n
,
a
,
y
,
mode
);
vmsAcospiI(n, a, inca, y, incy, mode);
vdAcospi
(
n
,
a
,
y
);
vdAcospiI(n, a, inca, y, incy);
vmdAcospi
(
n
,
a
,
y
,
mode
);
vmdAcospiI(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 vsAcospi const float* for vmsAcospi const double* for vdAcospi const double* for vmdAcospi | 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 vsAcospi float* for vmsAcospi double* for vdAcospi double* for vmdAcospi | Pointer to an array containing the output vector y . |
Description
The
v?Acospi
function computes the inverse cosine of vector elements divided by π
. For an argument x
, the function computes acos(x
)/π
.See Special Value Notations for the conventions used in this table:
Argument | Result | VM Error Status | Exception |
|---|---|---|---|
+0 | +1/2 | ||
-0 | +1/2 | ||
+1 | +0 | ||
-1 | +1 | ||
| x | > 1 | QNAN | VML_STATUS_ERRDOM | INVALID |
+ ∞ | QNAN | VML_STATUS_ERRDOM | INVALID |
- ∞ | QNAN | VML_STATUS_ERRDOM | INVALID |
QNAN | QNAN | ||
SNAN | QNAN | INVALID |