.TH "_lat2_" 3 "Version 3.12.0" "LAPACK" \" -*- nroff -*-
.ad l
.nh
.SH NAME
_lat2_ \- <em>lat2</em>: triangular matrix, convert double <=> single
.SH SYNOPSIS
.br
.PP
.SS "Functions"

.in +1c
.ti -1c
.RI "subroutine \fBdlat2s\fP (uplo, n, a, lda, sa, ldsa, info)"
.br
.RI "\fBDLAT2S\fP converts a double-precision triangular matrix to a single-precision triangular matrix\&. "
.ti -1c
.RI "subroutine \fBzlat2c\fP (uplo, n, a, lda, sa, ldsa, info)"
.br
.RI "\fBZLAT2C\fP converts a double complex triangular matrix to a complex triangular matrix\&. "
.in -1c
.SH "Detailed Description"
.PP 

.SH "Function Documentation"
.PP 
.SS "subroutine dlat2s (character uplo, integer n, double precision, dimension( lda, * ) a, integer lda, real, dimension( ldsa, * ) sa, integer ldsa, integer info)"

.PP
\fBDLAT2S\fP converts a double-precision triangular matrix to a single-precision triangular matrix\&.  
.PP
\fBPurpose:\fP
.RS 4

.PP
.nf
 DLAT2S converts a DOUBLE PRECISION triangular matrix, SA, to a SINGLE
 PRECISION triangular matrix, A\&.

 RMAX is the overflow for the SINGLE PRECISION arithmetic
 DLAS2S checks that all the entries of A are between -RMAX and
 RMAX\&. If not the conversion is aborted and a flag is raised\&.

 This is an auxiliary routine so there is no argument checking\&.
.fi
.PP
 
.RE
.PP
\fBParameters\fP
.RS 4
\fIUPLO\fP 
.PP
.nf
          UPLO is CHARACTER*1
          = 'U':  A is upper triangular;
          = 'L':  A is lower triangular\&.
.fi
.PP
.br
\fIN\fP 
.PP
.nf
          N is INTEGER
          The number of rows and columns of the matrix A\&.  N >= 0\&.
.fi
.PP
.br
\fIA\fP 
.PP
.nf
          A is DOUBLE PRECISION array, dimension (LDA,N)
          On entry, the N-by-N triangular coefficient matrix A\&.
.fi
.PP
.br
\fILDA\fP 
.PP
.nf
          LDA is INTEGER
          The leading dimension of the array A\&.  LDA >= max(1,N)\&.
.fi
.PP
.br
\fISA\fP 
.PP
.nf
          SA is REAL array, dimension (LDSA,N)
          Only the UPLO part of SA is referenced\&.  On exit, if INFO=0,
          the N-by-N coefficient matrix SA; if INFO>0, the content of
          the UPLO part of SA is unspecified\&.
.fi
.PP
.br
\fILDSA\fP 
.PP
.nf
          LDSA is INTEGER
          The leading dimension of the array SA\&.  LDSA >= max(1,M)\&.
.fi
.PP
.br
\fIINFO\fP 
.PP
.nf
          INFO is INTEGER
          = 0:  successful exit\&.
          = 1:  an entry of the matrix A is greater than the SINGLE
                PRECISION overflow threshold, in this case, the content
                of the UPLO part of SA in exit is unspecified\&.
.fi
.PP
 
.RE
.PP
\fBAuthor\fP
.RS 4
Univ\&. of Tennessee 
.PP
Univ\&. of California Berkeley 
.PP
Univ\&. of Colorado Denver 
.PP
NAG Ltd\&. 
.RE
.PP

.PP
Definition at line \fB110\fP of file \fBdlat2s\&.f\fP\&.
.SS "subroutine zlat2c (character uplo, integer n, complex*16, dimension( lda, * ) a, integer lda, complex, dimension( ldsa, * ) sa, integer ldsa, integer info)"

.PP
\fBZLAT2C\fP converts a double complex triangular matrix to a complex triangular matrix\&.  
.PP
\fBPurpose:\fP
.RS 4

.PP
.nf
 ZLAT2C converts a COMPLEX*16 triangular matrix, SA, to a COMPLEX
 triangular matrix, A\&.

 RMAX is the overflow for the SINGLE PRECISION arithmetic
 ZLAT2C checks that all the entries of A are between -RMAX and
 RMAX\&. If not the conversion is aborted and a flag is raised\&.

 This is an auxiliary routine so there is no argument checking\&.
.fi
.PP
 
.RE
.PP
\fBParameters\fP
.RS 4
\fIUPLO\fP 
.PP
.nf
          UPLO is CHARACTER*1
          = 'U':  A is upper triangular;
          = 'L':  A is lower triangular\&.
.fi
.PP
.br
\fIN\fP 
.PP
.nf
          N is INTEGER
          The number of rows and columns of the matrix A\&.  N >= 0\&.
.fi
.PP
.br
\fIA\fP 
.PP
.nf
          A is COMPLEX*16 array, dimension (LDA,N)
          On entry, the N-by-N triangular coefficient matrix A\&.
.fi
.PP
.br
\fILDA\fP 
.PP
.nf
          LDA is INTEGER
          The leading dimension of the array A\&.  LDA >= max(1,N)\&.
.fi
.PP
.br
\fISA\fP 
.PP
.nf
          SA is COMPLEX array, dimension (LDSA,N)
          Only the UPLO part of SA is referenced\&.  On exit, if INFO=0,
          the N-by-N coefficient matrix SA; if INFO>0, the content of
          the UPLO part of SA is unspecified\&.
.fi
.PP
.br
\fILDSA\fP 
.PP
.nf
          LDSA is INTEGER
          The leading dimension of the array SA\&.  LDSA >= max(1,M)\&.
.fi
.PP
.br
\fIINFO\fP 
.PP
.nf
          INFO is INTEGER
          = 0:  successful exit\&.
          = 1:  an entry of the matrix A is greater than the SINGLE
                PRECISION overflow threshold, in this case, the content
                of the UPLO part of SA in exit is unspecified\&.
.fi
.PP
 
.RE
.PP
\fBAuthor\fP
.RS 4
Univ\&. of Tennessee 
.PP
Univ\&. of California Berkeley 
.PP
Univ\&. of Colorado Denver 
.PP
NAG Ltd\&. 
.RE
.PP

.PP
Definition at line \fB110\fP of file \fBzlat2c\&.f\fP\&.
.SH "Author"
.PP 
Generated automatically by Doxygen for LAPACK from the source code\&.