void main() {
printf("\n Input data file name: "); scanf("%s", filename);
fp = fopen(filename, "r");
//read size of linear system
fscanf(fp,"%d", &m);
fscanf(fp,"%d", &n);
//allocate memory
vmblock = vminit();
A = (REAL **) vmalloc(vmblock, MATRIX, m+1, n+1);
U = (REAL **) vmalloc(vmblock, MATRIX, m+1, n+1);
V = (REAL **) vmalloc(vmblock, MATRIX, n+1, n+1);
B = (REAL *) vmalloc(vmblock, VEKTOR, m+1, 0);
W = (REAL *) vmalloc(vmblock, VEKTOR, n+1, 0);
X = (REAL *) vmalloc(vmblock, VEKTOR, n+1, 0);
// read matrix A
for (i=1; i<=m; i++)
for (j=1; j<=n; j++)
fscanf(fp,"%lf", &A[i][j]);
// read vector B
for (i=1; i<=m; i++)
fscanf(fp,"%lf", &B[i]);
fclose(fp);
fp = fopen("tsvbksb.lst", "w");
fprintf(fp,"\n M = %d\n", m);
fprintf(fp," N = %d\n", n);
WriteMat(" Matrix A:",A,m,n);
WriteVec(" Vector B:",B,m);
// Save A in U
for (i=1; i<=m; i++)
for (j=1; j<=n; j++)
U[i][j]=A[i][j];
//call singular value decomposition subroutine
SVDCMP(U,m,n,W,V);
WriteMat(" Matrix U:",U,m,n);
WriteVec(" Vector W:",W,n);
WriteMat(" Matrix V:",V,m,n);
//seek highest value of W's and set near-zero
//values to exactly zero (for near-singular cases)
WMAX=0.0;
for (j=1; j<=n; j++)
if (W[j] > WMAX) WMAX=W[j];
WMIN=WMAX*1e-6;
for (j=1; j<=n; j++)
if (W[j] < WMIN) W[j]=0.0;
//call solver for SVD matrix
SVBKSB(U,W,V,m,n,B,X);
//print solution
WriteVec(" Solution:",X,n);
// free memory
vmfree(vmblock);
fclose(fp);
printf("\n Results in file tsvbksb.lst.\n\n");
}
STATIC TOKEN_T lexSubString( STRM_T s )
/**************************************/
{
char text[MAX_TOK_SIZE]; /* temporary storage */
unsigned pos; /* position in text */
TOKEN_T state; /* what are we collecting */
BOOLEAN done; /* are we done collecting ? */
VECSTR vec; /* build string here */
assert( isascii( s ) );
vec = StartVec();
if( ismacc( s ) ) {
state = MAC_NAME;
} else if( isws( s ) ) {
state = MAC_WS;
} else {
state = MAC_PUNC;
}
pos = 0;
done = FALSE;
while( !done ) {
text[pos++] = s;
if( pos == MAX_TOK_SIZE - 1 ) {
text[pos] = NULLCHAR;
WriteVec( vec, text );
pos = 0;
}
s = PreGetCH();
switch( s ) {
case EOL: /* always stop on these characters */
case STRM_END:
case STRM_MAGIC:
case ')':
case DOLLAR:
done = TRUE;
break;
default:
switch( state ) {
case MAC_NAME: done = !ismacc( s ); break;
case MAC_WS: done = !isws( s ); break;
case MAC_PUNC: done = ismacc( s ) || isws( s ); break;
}
}
}
UnGetCH( s );
text[pos] = NULLCHAR;
WriteVec( vec, text );
CurAttr.u.ptr = FinishVec( vec );
return( state );
}
char *GetCurDeps( BOOLEAN younger, BOOLEAN isMacInf )
/**********************************************************/
{
TLIST *walk;
VECSTR vec;
BOOLEAN written;
TARGET *targ;
struct exStack cur;
const char *formattedString;
char *ret;
cur = exGetCurVars();
// This is for Glob.microsoft and Glob.posix
// $< and $** are different
if( isMacInf ) {
cur.dep = cur.impDep;
} else {
if( cur.dep == NULL ) {
cur.dep = cur.impDep;
}
}
if( (younger && cur.targ == NULL) ||
cur.dep == NULL || cur.dep->targs == NULL ) {
return( StrDupSafe( "" ) );
}
vec = StartVec();
written = FALSE;
walk = cur.dep->targs;
while( walk != NULL ) {
targ = walk->target;
if( !younger || dateCmp( cur.targ->date, targ->date ) < 0 ) {
if( written ) {
WriteVec( vec, " " );
}
formattedString = procPath( targ->node.name );
WriteVec( vec, formattedString );
written = TRUE;
}
walk = walk->next;
}
ret = FinishVec( vec );
return( ret );
}
STATIC char *doStringSubstitute( const char *name, const char *oldString, const char *newString )
/************************************************************************************************
* $(macroname:oldstr=newstr)
* substitute any occurence of oldstr with new str
*/
{
VECSTR output;
char const *current;
char const *start;
size_t old_len;
output = StartVec();
WriteVec( output, "" );
assert( name != NULL && oldString != NULL && newString != NULL );
old_len = strlen( oldString );
for( start = current = name; *current != NULLCHAR; current++ ) {
if( strncmp( current, oldString, old_len ) == 0 ) {
CatNStrToVec( output, start, current - start );
CatStrToVec( output, newString );
start = current + old_len;
current = start - 1;
}
}
CatStrToVec( output, start );
return( FinishVec( output ) );
}
char *GetCurDeps( bool younger, bool isMacInf )
/*********************************************/
{
TLIST *tlist;
VECSTR vec;
bool written;
TARGET *targ;
struct exStack cur;
const char *formattedString;
char *ret;
cur = exGetCurVars();
// This is for Glob.compat_nmake and Glob.compat_posix
// $< and $** are different
if( isMacInf ) {
cur.dep = cur.impDep;
} else {
if( cur.dep == NULL ) {
cur.dep = cur.impDep;
}
}
if( (younger && cur.targ == NULL) ||
cur.dep == NULL || cur.dep->targs == NULL ) {
return( StrDupSafe( "" ) );
}
vec = StartVec();
written = false;
for( tlist = cur.dep->targs; tlist != NULL; tlist = tlist->next ) {
targ = tlist->target;
if( !younger || dateCmp( cur.targ->date, targ->date ) < 0 ) {
if( written ) {
WriteVec( vec, " " );
}
formattedString = procPath( targ->node.name );
WriteVec( vec, formattedString );
written = true;
}
}
ret = FinishVec( vec );
return( ret );
}
STATIC char *CatModifier( char *inString, BOOLEAN destroy )
/**********************************************************
* Get the modifier
* if it is modify the value inInString to the specs of the modifier
* it then returns the modified string with the right format
*/
{
STRM_T s;
VECSTR output;
char buffer[2];
char *ret;
assert( inString != NULL );
s = PreGetCH();
if( ismsmodifier( s ) ) {
buffer[0] = s;
buffer[1] = NULLCHAR;
output = StartVec();
WriteVec( output, "" );
CatStrToVec( output, inString );
CatStrToVec( output, buffer );
if( destroy ) {
FreeSafe( inString );
}
return( FinishVec( output ) );
} else {
UnGetCH( s );
ret = StrDupSafe( inString );
if( destroy ) {
FreeSafe( inString );
}
return( ret );
}
}
TOKEN_T LexPath( STRM_T s )
/*********************************
* returns: ({filec}*";")+ TOK_PATH
* EOL EOL
* STRM_END STRM_END
*/
{
char path[_MAX_PATH];
char string_open;
unsigned pos;
VECSTR vec; /* we'll store file/path here */
for( ;; ) { /* get first valid character */
if( s == EOL || s == STRM_END ) {
/* now we pass this to LexParser() so that it can reset */
return( LexParser( s ) );
}
if( s == STRM_MAGIC ) {
InsString( DeMacro( TOK_EOL ), TRUE );
} else if( !isfilec( s ) && s != PATH_SPLIT && s != ';' && s != '\"' && !isws( s ) ) {
PrtMsg( ERR | LOC | EXPECTING_M, M_PATH );
} else if( !isws( s ) ) {
break;
}
s = PreGetCH(); /* keep fetching characters */
}
/* just so you know what we've got now */
assert( isfilec( s ) || s == PATH_SPLIT || s == ';' || s == '\"' );
vec = StartVec();
pos = 0;
for( ;; ) {
/*
* Extract path from stream. If double quote is found, start string mode
* and ignore all filename character specifiers and just copy all
* characters. String mode ends with another double quote. Backslash can
* be used to escape only double quotes, otherwise they are recognized
* as path seperators. If we are not in string mode character validity
* is checked against isfilec().
*/
string_open = 0;
while( pos < _MAX_PATH && s != EOL && s != STRM_END ) {
if( s == BACKSLASH ) {
s = PreGetCH();
if( s == DOUBLEQUOTE ) {
path[pos++] = DOUBLEQUOTE;
} else if( s == EOL || s == STRM_END ) {
// Handle special case when backslash is placed at end of
// line or file
path[pos++] = BACKSLASH;
} else {
path[pos++] = BACKSLASH;
// make sure we don't cross boundaries
if( pos < _MAX_PATH ) {
path[pos++] = s;
}
}
} else {
if( s == DOUBLEQUOTE ) {
string_open = !string_open;
} else {
if( string_open ) {
path[pos++] = s;
} else if( isfilec( s ) ) {
path[pos++] = s;
} else {
break; // not valid path character, break out.
}
}
}
s = PreGetCH();
}
if( string_open ) {
FreeSafe( FinishVec( vec ) );
PrtMsgExit(( FTL | LOC | ERROR_STRING_OPEN ));
}
if( pos == _MAX_PATH ) {
FreeSafe( FinishVec( vec ) );
PrtMsgExit(( FTL | LOC | MAXIMUM_TOKEN_IS, _MAX_PATH - 1 )); // NOTREACHED
}
path[pos] = NULLCHAR;
WriteVec( vec, path );
if( s != PATH_SPLIT && s != ';' ) {
break;
}
pos = 0;
path[pos++] = PATH_SPLIT;
s = PreGetCH(); /* use Pre here to allow path;&(nl)path */
}
UnGetCH( s );
CurAttr.u.ptr = FinishVec( vec );
return( TOK_PATH );
}
