1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
|
INTEGER FUNCTION ILAPREC( PREC )
*
* -- LAPACK routine (version 3.2) --
* Univ. of Tennessee, Univ. of California Berkeley and NAG Ltd..
* October 2008
* .. Scalar Arguments ..
CHARACTER PREC
* ..
*
* Purpose
* =======
*
* This subroutine translated from a character string specifying an
* intermediate precision to the relevant BLAST-specified integer
* constant.
*
* ILAPREC returns an INTEGER. If ILAPREC < 0, then the input is not a
* character indicating a supported intermediate precision. Otherwise
* ILAPREC returns the constant value corresponding to PREC.
*
* Arguments
* =========
* PREC (input) CHARACTER*1
* Specifies the form of the system of equations:
* = 'S': Single
* = 'D': Double
* = 'I': Indigenous
* = 'X', 'E': Extra
* =====================================================================
*
* .. Parameters ..
INTEGER BLAS_PREC_SINGLE, BLAS_PREC_DOUBLE, BLAS_PREC_INDIGENOUS,
$ BLAS_PREC_EXTRA
PARAMETER ( BLAS_PREC_SINGLE = 211, BLAS_PREC_DOUBLE = 212,
$ BLAS_PREC_INDIGENOUS = 213, BLAS_PREC_EXTRA = 214 )
* ..
* .. External Functions ..
LOGICAL LSAME
EXTERNAL LSAME
* ..
* .. Executable Statements ..
IF( LSAME( PREC, 'S' ) ) THEN
ILAPREC = BLAS_PREC_SINGLE
ELSE IF( LSAME( PREC, 'D' ) ) THEN
ILAPREC = BLAS_PREC_DOUBLE
ELSE IF( LSAME( PREC, 'I' ) ) THEN
ILAPREC = BLAS_PREC_INDIGENOUS
ELSE IF( LSAME( PREC, 'X' ) .OR. LSAME( PREC, 'E' ) ) THEN
ILAPREC = BLAS_PREC_EXTRA
ELSE
ILAPREC = -1
END IF
RETURN
*
* End of ILAPREC
*
END
|