v?Atan
v?Atan
Computes inverse tangent of vector elements.
Syntax
vsAtan
(
n
,
a
,
y
)
;
vsAtanI(n, a, inca, y, incy);
vmsAtan
(
n
,
a
,
y
,
mode
)
;
vmsAtanI(n, a, inca, y, incy, mode);
vdAtan
(
n
,
a
,
y
)
;
vdAtanI(n, a, inca, y, incy);
vmdAtan
(
n
,
a
,
y
,
mode
)
;
vmdAtanI(n, a, inca, y, incy, mode);
vcAtan
(
n
,
a
,
y
)
;
vcAtanI(n, a, inca, y, incy);
vmcAtan
(
n
,
a
,
y
,
mode
)
;
vmcAtanI(n, a, inca, y, incy, mode);
vzAtan
(
n
,
a
,
y
)
;
vzAtanI(n, a, inca, y, incy);
vmzAtan
(
n
,
a
,
y
,
mode
)
;
vmzAtanI(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 vsAtan , vmsAtan const double* for vdAtan , vmdAtan const MKL_Complex8* for vcAtan , vmcAtan const MKL_Complex16* for vzAtan , vmzAtan | 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 vsAtan , vmsAtan double* for vdAtan , vmdAtan MKL_Complex8* for vcAtan , vmcAtan MKL_Complex16* for vzAtan , vmzAtan | Pointer to an array that contains the output vector y . |
Description
The
v?Atan
function computes inverse tangent of vector elements.Argument | Result | VM Error Status | Exception |
|---|---|---|---|
+0 | +0 | ||
-0 | -0 | ||
+ ∞ | + π | ||
- ∞ | - π | ||
QNAN | QNAN | ||
SNAN | QNAN | INVALID |
Specifications
for special values of the complex functions are defined according to the following formula
Atan(z) = -i*Atanh(i*z)
.