Computes denary logarithm of vector elements.
Syntax
FORTRAN:
call vslog10( n, a, y )
call vmslog10( n, a, y, mode )
call vdlog10( n, a, y )
call vmdlog10( n, a, y, mode )
call vclog10( n, a, y )
call vmclog10( n, a, y, mode )
call vzlog10( n, a, y )
call vmzlog10( n, a, y, mode )
C:
vsLog10( n, a, y );
vmsLog10( n, a, y, mode );
vdLog10( n, a, y );
vmdLog10( n, a, y, mode );
vcLog10( n, a, y );
vmcLog10( n, a, y, mode );
vzLog10( n, a, y );
vmzLog10( n, a, y, mode );
Input Parameters
Name |
Type |
Description |
|---|---|---|
n |
FORTRAN 77: INTEGER Fortran 90: INTEGER, INTENT(IN) C: const int |
Specifies the number of elements to be calculated. |
a |
FORTRAN 77: REAL for vslog10, vmslog10 DOUBLE PRECISION for vdlog10, vmdlog10 COMPLEX for vclog10, vmclog10 DOUBLE COMPLEX for vzlog10, vmzlog10 Fortran 90: REAL, INTENT(IN) for vslog10, vmslog10 DOUBLE PRECISION, INTENT(IN) for vdlog10, vmdlog10 COMPLEX, INTENT(IN) for vclog10, vmclog10 DOUBLE COMPLEX, INTENT(IN) for vzlog10, vmzlog10 C: const float* for vsLog10, vmsLog10 const double* for vdLog10, vmdLog10 const MKL_Complex8* for vcLog10, vmcLog10 const MKL_Complex16* for vzLog10, vmzLog10 |
FORTRAN: Array that specifies the input vector a. C: Pointer to an array that contains the input vector a. |
mode |
FORTRAN 77: INTEGER*8 Fortran 90: INTEGER(KIND=8), INTENT(IN) C: const MKL_INT64 |
Overrides global VML mode setting for this function call. See vmlSetMode for possible values and their description. |
Output Parameters
Name |
Type |
Description |
|---|---|---|
y |
FORTRAN 77: REAL for vslog10, vmslog10 DOUBLE PRECISION for vdlog10, vmdlog10 COMPLEX for vclog10, vmclog10 DOUBLE COMPLEX for vzlog10, vmzlog10 Fortran 90: REAL, INTENT(OUT) for vslog10, vmslog10 DOUBLE PRECISION, INTENT(OUT) for vdlog10, vmdlog10 COMPLEX, INTENT(OUT) for vclog10, vmclog10 DOUBLE COMPLEX, INTENT(OUT) for vzlog10, vmzlog10 C: float* for vsLog10, vmsLog10 double* for vdLog10, vmdLog10 MKL_Complex8* for vcLog10, vmcLog10 MKL_Complex16* for vzLog10, vmzLog10 |
FORTRAN: Array that specifies the output vector y. C: Pointer to an array that contains the output vector y. |
Description
The v?Log10 function computes a denary logarithm of vector elements.
| Argument | Result | VML Error Status | Exception |
|---|---|---|---|
| +1 | +0 | ||
| X < +0 | QNAN | VML_STATUS_ERRDOM | INVALID |
| +0 | -∞ | VML_STATUS_SING | ZERODIVIDE |
| -0 | -∞ | VML_STATUS_SING | ZERODIVIDE |
| -∞ | 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·QNAN INVALID |
| +i·Y |  |
+∞+i·0 | QNAN+i·QNAN INVALID |
||||
| +i·0 | |
 ZERODRIVE |
-∞+i·0 ZERODRIVE | +∞+i·0 | QNAN+i·QNAN INVALID |
||
| -i·0 |  |
 ZERODIVIDE |
-∞-i·0 ZERODIVIDE | +∞-i·0 | QNAN-i·QNAN INVALID |
||
| -i·Y | |
+∞-i·0 | QNAN+i·QNAN INVALID |
||||
| -i·∞ | |
 |
|
|
|
 |
+∞+i·QNAN |
| +i·NAN | +∞+i·QNAN |
QNAN+i·QNAN INVALID |
QNAN+i·QNAN INVALID |
QNAN+i·QNAN INVALID |
QNAN+i·QNAN INVALID |
+∞+i·QNAN |
QNAN+i·QNAN INVALID |
Notes:
raises INVALID exception when real or imaginary part of the argument is SNAN