Visible to Intel only — GUID: GUID-BF02CDB8-06A1-423D-875A-699112502938
Visible to Intel only — GUID: GUID-BF02CDB8-06A1-423D-875A-699112502938
v?Sqrt
Computes a square root of vector elements.
Syntax
call vssqrt( n, a, y )
call vssqrti(n, a, inca, y, incy)
call vmssqrt( n, a, y, mode )
call vmssqrti(n, a, inca, y, incy, mode)
call vdsqrt( n, a, y )
call vdsqrti(n, a, inca, y, incy)
call vmdsqrt( n, a, y, mode )
call vmdsqrti(n, a, inca, y, incy, mode)
call vcsqrt( n, a, y )
call vcsqrti(n, a, inca, y, incy)
call vmcsqrt( n, a, y, mode )
call vmcsqrti(n, a, inca, y, incy, mode)
call vzsqrt( n, a, y )
call vzsqrti(n, a, inca, y, incy)
call vmzsqrt( n, a, y, mode )
call vmzsqrti(n, a, inca, y, incy, mode)
Include Files
- mkl_vml.f90
Input Parameters
Name |
Type |
Description |
---|---|---|
n |
INTEGER, INTENT(IN) |
Specifies the number of elements to be calculated. |
a |
DOUBLE PRECISION for vdsqrt, vmdsqrt COMPLEX for vcsqrt, vmcsqrt DOUBLE COMPLEX for vzsqrt, vmzsqrt REAL, INTENT(IN) for vssqrt, vmssqrt DOUBLE PRECISION, INTENT(IN) for vdsqrt, vmdsqrt COMPLEX, INTENT(IN) for vcsqrt, vmcsqrt DOUBLE COMPLEX, INTENT(IN) for vzsqrt, vmzsqrt |
Array that specifies the input vector a. |
inca, incy |
INTEGER, INTENT(IN) |
Specifies increments for the elements of a and y. |
mode |
INTEGER(KIND=8), INTENT(IN) |
Overrides global VM mode setting for this function call. See vmlSetMode for possible values and their description. |
Output Parameters
Name |
Type |
Description |
---|---|---|
y |
REAL for vssqrt, vmssqrt DOUBLE PRECISION for vdsqrt, vmdsqrt COMPLEX for vcsqrt, vmcsqrt DOUBLE COMPLEX for vzsqrt, vmzsqrt REAL, INTENT(OUT) for vssqrt, vmssqrt DOUBLE PRECISION, INTENT(OUT) for vdsqrt, vmdsqrt COMPLEX, INTENT(OUT) for vcsqrt, vmcsqrt DOUBLE COMPLEX, INTENT(OUT) for vzsqrt, vmzsqrt |
Array that specifies the output vector y. |
Description
The v?Sqrt function computes a square root of vector elements.
Argument | Result | VM Error Status | Exception |
---|---|---|---|
X < +0 | QNAN | VML_STATUS_ERRDOM | INVALID |
+0 | +0 | ||
-0 | -0 | ||
-∞ | QNAN | VML_STATUS_ERRDOM | INVALID |
+∞ | +∞ | ||
QNAN | QNAN | ||
SNAN | QNAN | INVALID |
See Special Value Notations for the conventions used in the table below.
RE(z) i·IM(z) |
-∞
|
-X
|
-0
|
+0
|
+X
|
+∞
|
NAN
|
---|---|---|---|---|---|---|---|
+i·∞ | +∞+i·∞ | +∞+i·∞ | +∞+i·∞ | +∞+i·∞ | +∞+i·∞ | +∞+i·∞ | +∞+i·∞ |
+i·Y | +0+i·∞ | +∞+i·0 | QNAN+i·QNAN |
||||
+i·0 | +0+i·∞ | +0+i·0 | +0+i·0 | +∞+i·0 | QNAN+i·QNAN |
||
-i·0 | +0-i·∞ | +0-i·0 | +0-i·0 | +∞-i·0 | QNAN+i·QNAN |
||
-i·Y | +0-i·∞ | +∞-i·0 | QNAN+i·QNAN |
||||
-i·∞ | +∞-i·∞ | +∞-i·∞ | +∞-i·∞ | +∞-i·∞ | +∞-i·∞ | +∞-i·∞ | +∞-i·∞ |
+i·NAN | QNAN+i·QNAN |
QNAN+i·QNAN |
QNAN+i·QNAN |
QNAN+i·QNAN |
QNAN+i·QNAN |
+∞+i·QNAN |
QNAN+i·QNAN |
Notes:
raises INVALID exception when the real or imaginary part of the argument is SNAN
Sqrt(CONJ(z))=CONJ(Sqrt(z)).