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<meta content="text/html;charset=UTF-8" http-equiv="Content-Type">
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<title>SuperLU: SRC/dreadhb.c File Reference</title>
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<link href="doxygen.css" rel="stylesheet" type="text/css">
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Main Page
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Data Structures
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Files
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SRC/dreadhb.c File ReferenceRead a matrix stored in Harwell-Boeing format. More...
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#include <stdio.h>
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#include <stdlib.h>
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#include "slu_ddefs.h"
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Functions
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int dDumpLine (FILE *fp)
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Eat up the rest of the current line.
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int dParseIntFormat (char *buf, int *num, int *size)
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int dParseFloatFormat (char *buf, int *num, int *size)
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static int ReadVector (FILE *fp, int n, int *where, int perline, int persize)
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int dReadValues (FILE *fp, int n, double *destination, int perline, int persize)
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void dreadhb (int *nrow, int *ncol, int *nonz, double **nzval, int **rowind, int **colptr)
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Auxiliary routines.
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Detailed Description
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-- SuperLU routine (version 2.0) --
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Univ. of California Berkeley, Xerox Palo Alto Research Center,
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and Lawrence Berkeley National Lab.
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November 15, 1997
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Purpose
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=======
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Read a DOUBLE PRECISION matrix stored in Harwell-Boeing format
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as described below.
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Line 1 (A72,A8)
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Col. 1 - 72 Title (TITLE)
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Col. 73 - 80 Key (KEY)
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Line 2 (5I14)
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Col. 1 - 14 Total number of lines excluding header (TOTCRD)
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Col. 15 - 28 Number of lines for pointers (PTRCRD)
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Col. 29 - 42 Number of lines for row (or variable) indices (INDCRD)
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Col. 43 - 56 Number of lines for numerical values (VALCRD)
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Col. 57 - 70 Number of lines for right-hand sides (RHSCRD)
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(including starting guesses and solution vectors
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if present)
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(zero indicates no right-hand side data is present)
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Line 3 (A3, 11X, 4I14)
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Col. 1 - 3 Matrix type (see below) (MXTYPE)
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Col. 15 - 28 Number of rows (or variables) (NROW)
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Col. 29 - 42 Number of columns (or elements) (NCOL)
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Col. 43 - 56 Number of row (or variable) indices (NNZERO)
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(equal to number of entries for assembled matrices)
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Col. 57 - 70 Number of elemental matrix entries (NELTVL)
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(zero in the case of assembled matrices)
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Line 4 (2A16, 2A20)
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Col. 1 - 16 Format for pointers (PTRFMT)
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Col. 17 - 32 Format for row (or variable) indices (INDFMT)
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Col. 33 - 52 Format for numerical values of coefficient matrix (VALFMT)
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Col. 53 - 72 Format for numerical values of right-hand sides (RHSFMT)
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Line 5 (A3, 11X, 2I14) Only present if there are right-hand sides present
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Col. 1 Right-hand side type:
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F for full storage or M for same format as matrix
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Col. 2 G if a starting vector(s) (Guess) is supplied. (RHSTYP)
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Col. 3 X if an exact solution vector(s) is supplied.
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Col. 15 - 28 Number of right-hand sides (NRHS)
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Col. 29 - 42 Number of row indices (NRHSIX)
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(ignored in case of unassembled matrices)
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The three character type field on line 3 describes the matrix type.
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The following table lists the permitted values for each of the three
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characters. As an example of the type field, RSA denotes that the matrix
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is real, symmetric, and assembled.
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First Character:
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R Real matrix
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C Complex matrix
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P Pattern only (no numerical values supplied)
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Second Character:
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S Symmetric
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U Unsymmetric
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H Hermitian
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Z Skew symmetric
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R Rectangular
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Third Character:
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A Assembled
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E Elemental matrices (unassembled)
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Function Documentation
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int dDumpLine
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(
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FILE *
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fp
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)
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int dParseFloatFormat
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(
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char *
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buf,
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int *
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num,
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int *
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size
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)
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int dParseIntFormat
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(
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char *
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buf,
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int *
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num,
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int *
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size
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)
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void dreadhb
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(
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int *
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nrow,
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int *
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ncol,
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int *
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nonz,
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double **
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nzval,
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int **
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rowind,
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int **
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colptr
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)
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int dReadValues
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(
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FILE *
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fp,
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int
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n,
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double *
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destination,
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int
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perline,
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int
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persize
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)
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static int ReadVector
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(
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FILE *
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fp,
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int
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n,
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int *
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where,
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int
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perline,
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int
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persize
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)
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[static]
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<address style="text-align: right;"><small>Generated on Mon Nov 22 10:23:47 2010 for SuperLU by </small></address>
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 1.5.5
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