1DLAG2S(1) LAPACK PROTOTYPE auxiliary routine (version 3.1.2) DLAG2S(1)
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6 DLAG2S - converts a DOUBLE PRECISION matrix, SA, to a SINGLE PRECISION
7 matrix, A
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10 SUBROUTINE DLAG2S( M, N, A, LDA, SA, LDSA, INFO )
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12 INTEGER INFO, LDA, LDSA, M, N
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14 REAL SA( LDSA, * )
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16 DOUBLE PRECISION A( LDA, * )
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19 DLAG2S converts a DOUBLE PRECISION matrix, SA, to a SINGLE PRECISION
20 matrix, A. RMAX is the overflow for the SINGLE PRECISION arithmetic
21 DLAG2S checks that all the entries of A are between -RMAX and RMAX. If
22 not the convertion is aborted and a flag is raised. This is an auxil‐
23 iary routine so there is no argument checking.
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26 M (input) INTEGER
27 The number of lines of the matrix A. M >= 0.
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29 N (input) INTEGER
30 The number of columns of the matrix A. N >= 0.
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32 A (input) DOUBLE PRECISION array, dimension (LDA,N)
33 On entry, the M-by-N coefficient matrix A.
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35 LDA (input) INTEGER
36 The leading dimension of the array A. LDA >= max(1,M).
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38 SA (output) REAL array, dimension (LDSA,N)
39 On exit, if INFO=0, the M-by-N coefficient matrix SA; if
40 INFO>0, the content of SA is unspecified.
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42 LDSA (input) INTEGER
43 The leading dimension of the array SA. LDSA >= max(1,M).
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45 INFO (output) INTEGER
46 = 0: successful exit.
47 = 1: an entry of the matrix A is greater than the SINGLE PRE‐
48 CISION overflow threshold, in this case, the content of SA in
49 exit is unspecified. ========= End of DLAG2S
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53 LAPACK PROTOTYPE auxiliary routinNeov(evmebresrio2n0038.1.2) DLAG2S(1)