DLAG2S(1) LAPACK PROTOTYPE auxiliary routine (version 3.1.2) DLAG2S(1)[top]NAMEDLAG2S - converts a DOUBLE PRECISION matrix, SA, to a SINGLE PRECISION matrix, ASYNOPSISSUBROUTINE DLAG2S( M, N, A, LDA, SA, LDSA, INFO ) INTEGER INFO, LDA, LDSA, M, N REAL SA( LDSA, * ) DOUBLE PRECISION A( LDA, * )PURPOSEDLAG2S converts a DOUBLE PRECISION matrix, SA, to a SINGLE PRECISION matrix, A. RMAX is the overflow for the SINGLE PRECISION arithmetic DLAG2S checks that all the entries of A are betweenand RMAX. If not the convertion is aborted and a flag is raised. This is an auxil‐ iary routine so there is no argument checking.-RMAXARGUMENTSM (input) INTEGER The number of lines of the matrix A. M >= 0. N (input) INTEGER The number of columns of the matrix A. N >= 0. A (input) DOUBLE PRECISION array, dimension (LDA,N) On entry, the M-by-N coefficient matrix A. LDA (input) INTEGER The leading dimension of the array A. LDA >= max(1,M). SA (output) REAL array, dimension (LDSA,N) On exit, if INFO=0, the M-by-N coefficient matrix SA; if INFO>0, the content of SA is unspecified. LDSA (input) INTEGER The leading dimension of the array SA. LDSA >= max(1,M). INFO (output) INTEGER = 0: successful exit. = 1: an entry of the matrix A is greater than the SINGLE PRE‐ CISION overflow threshold, in this case, the content of SA in exit is unspecified. ========= End of DLAG2S LAPACK PROTOTYPE auxiliary routiNovemberi2008.1.2) DLAG2S(1)

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