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---
:name: dlag2s
:md5sum: 669e5e37ddea7cbcff65fc0b9ae1eca2
:category: :subroutine
:arguments:
- m:
:type: integer
:intent: input
- n:
:type: integer
:intent: input
- a:
:type: doublereal
:intent: input
:dims:
- lda
- n
- lda:
:type: integer
:intent: input
- sa:
:type: real
:intent: output
:dims:
- ldsa
- n
- ldsa:
:type: integer
:intent: input
- info:
:type: integer
:intent: output
:substitutions:
ldsa: MAX(1,m)
:fortran_help: " SUBROUTINE DLAG2S( M, N, A, LDA, SA, LDSA, INFO )\n\n\
* Purpose\n\
* =======\n\
*\n\
* DLAG2S converts a DOUBLE PRECISION matrix, SA, to a SINGLE\n\
* PRECISION matrix, A.\n\
*\n\
* RMAX is the overflow for the SINGLE PRECISION arithmetic\n\
* DLAG2S checks that all the entries of A are between -RMAX and\n\
* RMAX. If not the conversion is aborted and a flag is raised.\n\
*\n\
* This is an auxiliary routine so there is no argument checking.\n\
*\n\n\
* Arguments\n\
* =========\n\
*\n\
* M (input) INTEGER\n\
* The number of lines of the matrix A. M >= 0.\n\
*\n\
* N (input) INTEGER\n\
* The number of columns of the matrix A. N >= 0.\n\
*\n\
* A (input) DOUBLE PRECISION array, dimension (LDA,N)\n\
* On entry, the M-by-N coefficient matrix A.\n\
*\n\
* LDA (input) INTEGER\n\
* The leading dimension of the array A. LDA >= max(1,M).\n\
*\n\
* SA (output) REAL array, dimension (LDSA,N)\n\
* On exit, if INFO=0, the M-by-N coefficient matrix SA; if\n\
* INFO>0, the content of SA is unspecified.\n\
*\n\
* LDSA (input) INTEGER\n\
* The leading dimension of the array SA. LDSA >= max(1,M).\n\
*\n\
* INFO (output) INTEGER\n\
* = 0: successful exit.\n\
* = 1: an entry of the matrix A is greater than the SINGLE\n\
* PRECISION overflow threshold, in this case, the content\n\
* of SA in exit is unspecified.\n\
*\n\
* =========\n\
*\n\
* .. Local Scalars ..\n INTEGER I, J\n DOUBLE PRECISION RMAX\n\
* ..\n\
* .. External Functions ..\n REAL SLAMCH\n EXTERNAL SLAMCH\n\
* ..\n"
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