Developer Reference

  • 2020.2
  • 07/15/2020
  • Public Content
Contents

v?Acospi

Computes the inverse cosine of vector elements divided by
π
.

Syntax

call vsacospi
(
n
,
a
,
y
)
call vsacospii(n, a, inca, y, incy)
call vmsacospi
(
n
,
a
,
y
,
mode
)
call vmsacospii(n, a, inca, y, incy, mode)
call vdacospi
(
n
,
a
,
y
)
call vdacospii(n, a, inca, y, incy)
call vmdacospi
(
n
,
a
,
y
,
mode
)
call vmdacospii(n, a, inca, y, incy, mode)
Include Files
  • mkl_vml.f90
Input Parameters
Name
Type
Description
n
INTEGER
Specifies the number of elements to be calculated.
a
REAL
for
vsacospi
REAL
for
vmsacospi
DOUBLE PRECISION
for
vdacospi
DOUBLE PRECISION
for
vmdacospi
Pointer to the array containing the input vector
a
.
inca
,
incy
INTEGER, INTENT(IN)
Specifies increments for the elements of
a
and
y
.
mode
INTEGER (KIND=8)
Overrides the global VM
mode
setting for this function call. See
vmlSetMode
for possible values and their description.
Output Parameters
Name
Type
Description
y
REAL
for
vsacospi
REAL
for
vmsacospi
DOUBLE PRECISION
for
vdacospi
DOUBLE PRECISION
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:
Special values for Real Function
v?Acospi(x)
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