.TH "sum1" 3 "Wed Feb 7 2024 11:30:40" "Version 3.12.0" "LAPACK" \" -*- nroff -*-
.ad l
.nh
.SH NAME
sum1 \- sum1: sum | x_i | (in LAPACK)
.SH SYNOPSIS
.br
.PP
.SS "Functions"

.in +1c
.ti -1c
.RI "double precision function \fBdzsum1\fP (n, cx, incx)"
.br
.RI "\fBDZSUM1\fP forms the 1-norm of the complex vector using the true absolute value\&. "
.ti -1c
.RI "real function \fBscsum1\fP (n, cx, incx)"
.br
.RI "\fBSCSUM1\fP forms the 1-norm of the complex vector using the true absolute value\&. "
.in -1c
.SH "Detailed Description"
.PP 

.SH "Function Documentation"
.PP 
.SS "double precision function dzsum1 (integer n, complex*16, dimension( * ) cx, integer incx)"

.PP
\fBDZSUM1\fP forms the 1-norm of the complex vector using the true absolute value\&.  
.PP
\fBPurpose:\fP
.RS 4

.PP
.nf
 DZSUM1 takes the sum of the absolute values of a complex
 vector and returns a double precision result\&.

 Based on DZASUM from the Level 1 BLAS\&.
 The change is to use the 'genuine' absolute value\&.
.fi
.PP
 
.RE
.PP
\fBParameters\fP
.RS 4
\fIN\fP 
.PP
.nf
          N is INTEGER
          The number of elements in the vector CX\&.
.fi
.PP
.br
\fICX\fP 
.PP
.nf
          CX is COMPLEX*16 array, dimension (N)
          The vector whose elements will be summed\&.
.fi
.PP
.br
\fIINCX\fP 
.PP
.nf
          INCX is INTEGER
          The spacing between successive values of CX\&.  INCX > 0\&.
.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
\fBContributors:\fP
.RS 4
Nick Higham for use with ZLACON\&. 
.RE
.PP

.SS "real function scsum1 (integer n, complex, dimension( * ) cx, integer incx)"

.PP
\fBSCSUM1\fP forms the 1-norm of the complex vector using the true absolute value\&.  
.PP
\fBPurpose:\fP
.RS 4

.PP
.nf
 SCSUM1 takes the sum of the absolute values of a complex
 vector and returns a single precision result\&.

 Based on SCASUM from the Level 1 BLAS\&.
 The change is to use the 'genuine' absolute value\&.
.fi
.PP
 
.RE
.PP
\fBParameters\fP
.RS 4
\fIN\fP 
.PP
.nf
          N is INTEGER
          The number of elements in the vector CX\&.
.fi
.PP
.br
\fICX\fP 
.PP
.nf
          CX is COMPLEX array, dimension (N)
          The vector whose elements will be summed\&.
.fi
.PP
.br
\fIINCX\fP 
.PP
.nf
          INCX is INTEGER
          The spacing between successive values of CX\&.  INCX > 0\&.
.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
\fBContributors:\fP
.RS 4
Nick Higham for use with CLACON\&. 
.RE
.PP

.SH "Author"
.PP 
Generated automatically by Doxygen for LAPACK from the source code\&.