v?Atanpi
v?Atanpi
Computes the inverse tangent of vector elements divided by
π
.Syntax
vsAtanpi
(
n
,
a
,
y
);
vsAtanpiI(n, a, inca, y, incy);
vmsAtanpi
(
n
,
a
,
y
,
mode
);
vmsAtanpiI(n, a, inca, y, incy, mode);
vdAtanpi
(
n
,
a
,
y
);
vdAtanpiI(n, a, inca, y, incy);
vmdAtanpi
(
n
,
a
,
y
,
mode
);
vmdAtanpiI(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 vsAtanpi const float* for vmsAtanpi const double* for vdAtanpi const double* for vmdAtanpi | 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 vsAtanpi float* for vmsAtanpi double* for vdAtanpi double* for vmdAtanpi | Pointer to an array containing the output vector y . |
Description
The
v?Atanpi
function computes the inverse tangent of vector elements divided by π
. For an argument x
, the function computes atan(x
)/π
.Argument | Result | VM Error Status | Exception |
|---|---|---|---|
+0 | +0 | ||
-0 | -0 | ||
+ ∞ | +1/2 | ||
- ∞ | -1/2 | ||
QNAN | QNAN | ||
SNAN | QNAN | INVALID |