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|
/* util.c */
#include "../DenseMtx.h"
#define MYDEBUG 0
/*--------------------------------------------------------------------*/
/*
---------------------------------------------------------
sort the rows so the row ids are in ascending order
sort the columns so the column ids are in ascending order
created -- 98may02, cca
---------------------------------------------------------
*/
void
DenseMtx_sort (
DenseMtx *mtx
) {
A2 a2 ;
int ii, ncol, nrow, sortColumns, sortRows ;
int *colind, *rowind ;
/*
----------------
check the output
----------------
*/
if ( mtx == NULL ) {
fprintf(stderr, "\n fatal error in DenseMtx_sort(%p)"
"\n bad input\n", mtx) ;
exit(-1) ;
}
DenseMtx_rowIndices(mtx, &nrow, &rowind) ;
DenseMtx_columnIndices(mtx, &ncol, &colind) ;
if ( nrow <= 0 || ncol <= 0 ) {
return ;
}
sortRows = sortColumns = 0 ;
for ( ii = 1 ; ii < nrow ; ii++ ) {
if ( rowind[ii-1] > rowind[ii] ) {
sortRows = 1 ;
break ;
}
}
for ( ii = 1 ; ii < ncol ; ii++ ) {
if ( colind[ii-1] > colind[ii] ) {
sortColumns = 1 ;
break ;
}
}
if ( sortRows == 0 && sortColumns == 0 ) {
return ;
}
A2_setDefaultFields(&a2) ;
DenseMtx_setA2(mtx, &a2) ;
if ( sortRows == 1 ) {
A2_sortRowsUp(&a2, nrow, rowind) ;
}
if ( sortColumns == 1 ) {
A2_sortColumnsUp(&a2, ncol, colind) ;
}
return ; }
/*--------------------------------------------------------------------*/
/*
-----------------------------------------------
copy row irowA from mtxA into row irowB in mtxB
created -- 98may02, cca
-----------------------------------------------
*/
void
DenseMtx_copyRow (
DenseMtx *mtxB,
int irowB,
DenseMtx *mtxA,
int irowA
) {
double *rowA, *rowB ;
int ii, inc2A, inc2B, iA, iB, ncol ;
/*
---------------
check the input
---------------
*/
if ( mtxB == NULL || irowB < 0 || irowB >= mtxB->nrow
|| mtxA == NULL || irowA < 0 || irowA >= mtxA->nrow
|| (ncol = mtxA->ncol) != mtxB->ncol ) {
fprintf(stderr, "\n fatal error in DenseMtx_copyRow(%p,%d,%p,%d)"
"\n bad input\n", mtxB, irowB, mtxA, irowA) ;
exit(-1) ;
}
inc2A = mtxA->inc2 ;
inc2B = mtxB->inc2 ;
/*
mtxB->rowind[irowB] = mtxA->rowind[irowA] ;
*/
if ( DENSEMTX_IS_REAL(mtxB) && DENSEMTX_IS_REAL(mtxA) ) {
rowA = mtxA->entries + irowA*mtxA->inc1 ;
rowB = mtxB->entries + irowB*mtxB->inc1 ;
for ( ii = iA = iB = 0 ; ii < ncol ; ii++, iA += inc2A, iB += inc2B){
rowB[iB] = rowA[iA] ;
}
} else if ( DENSEMTX_IS_COMPLEX(mtxB) && DENSEMTX_IS_COMPLEX(mtxA) ) {
rowA = mtxA->entries + 2*irowA*mtxA->inc1 ;
rowB = mtxB->entries + 2*irowB*mtxB->inc1 ;
for ( ii = iA = iB = 0 ; ii < ncol ; ii++, iA += inc2A, iB += inc2B){
rowB[2*iB] = rowA[2*iA] ;
rowB[2*iB+1] = rowA[2*iA+1] ;
}
}
return ; }
/*--------------------------------------------------------------------*/
/*
---------------------------------------------------------------
copy row irowA from mtxA into row irowB in mtxB
and copy row index irowB from mtxB into row index irowA of mtxA
created -- 98aug12, cca
---------------------------------------------------------------
*/
void
DenseMtx_copyRowAndIndex (
DenseMtx *mtxB,
int irowB,
DenseMtx *mtxA,
int irowA
) {
/*
---------------
check the input
---------------
*/
if ( mtxB == NULL || irowB < 0 || irowB >= mtxB->nrow
|| mtxA == NULL || irowA < 0 || irowA >= mtxA->nrow
|| mtxA->ncol != mtxB->ncol ) {
fprintf(stderr, "\n fatal error in DenseMtx_copyRow(%p,%d,%p,%d)"
"\n bad input\n", mtxB, irowB, mtxA, irowA) ;
exit(-1) ;
}
DenseMtx_copyRow(mtxB, irowB, mtxA, irowA) ;
mtxB->rowind[irowB] = mtxA->rowind[irowA] ;
return ; }
/*--------------------------------------------------------------------*/
/*
----------------------------------------------
add row irowA from mtxA into row irowB in mtxB
created -- 98aug12, cca
----------------------------------------------
*/
void
DenseMtx_addRow (
DenseMtx *mtxB,
int irowB,
DenseMtx *mtxA,
int irowA
) {
double *rowA, *rowB ;
int ii, inc2A, inc2B, iA, iB, ncol ;
/*
---------------
check the input
---------------
*/
if ( mtxB == NULL || irowB < 0 || irowB >= mtxB->nrow
|| mtxA == NULL || irowA < 0 || irowA >= mtxA->nrow
|| (ncol = mtxA->ncol) != mtxB->ncol ) {
fprintf(stderr, "\n fatal error in DenseMtx_addRow(%p,%d,%p,%d)"
"\n bad input\n", mtxB, irowB, mtxA, irowA) ;
exit(-1) ;
}
inc2A = mtxA->inc2 ;
inc2B = mtxB->inc2 ;
if ( DENSEMTX_IS_REAL(mtxB) && DENSEMTX_IS_REAL(mtxA) ) {
rowA = mtxA->entries + irowA*mtxA->inc1 ;
rowB = mtxB->entries + irowB*mtxB->inc1 ;
for ( ii = iA = iB = 0 ; ii < ncol ; ii++, iA += inc2A, iB += inc2B){
rowB[iB] += rowA[iA] ;
}
} else if ( DENSEMTX_IS_COMPLEX(mtxB) && DENSEMTX_IS_COMPLEX(mtxA) ) {
rowA = mtxA->entries + 2*irowA*mtxA->inc1 ;
rowB = mtxB->entries + 2*irowB*mtxB->inc1 ;
for ( ii = iA = iB = 0 ; ii < ncol ; ii++, iA += inc2A, iB += inc2B){
rowB[2*iB] += rowA[2*iA] ;
rowB[2*iB+1] += rowA[2*iA+1] ;
}
}
return ; }
/*--------------------------------------------------------------------*/
/*
-----------------------
zero the entries
created -- 98may16, cca
-----------------------
*/
void
DenseMtx_zero (
DenseMtx *mtx
) {
/*
---------------
check the input
---------------
*/
if ( mtx == NULL ) {
fprintf(stderr, "\n fatal error in DenseMtx_zero(%p)"
"\n bad input\n", mtx) ;
exit(-1) ;
}
if ( DENSEMTX_IS_REAL(mtx) ) {
DVzero(mtx->nrow*mtx->ncol, mtx->entries) ;
} else if ( DENSEMTX_IS_COMPLEX(mtx) ) {
DVzero(2*mtx->nrow*mtx->ncol, mtx->entries) ;
}
return ; }
/*--------------------------------------------------------------------*/
/*
------------------------
fill with random entries
created -- 98may16, cca
------------------------
*/
void
DenseMtx_fillRandomEntries (
DenseMtx *mtx,
Drand *drand
) {
/*
---------------
check the input
---------------
*/
if ( mtx == NULL || drand == NULL ) {
fprintf(stderr, "\n fatal error in DenseMtx_fillRandomEntries(%p,%p)"
"\n bad input\n", mtx, drand) ;
exit(-1) ;
}
if ( DENSEMTX_IS_REAL(mtx) ) {
Drand_fillDvector(drand, mtx->nrow*mtx->ncol, mtx->entries) ;
} else if ( DENSEMTX_IS_COMPLEX(mtx) ) {
Drand_fillDvector(drand, 2*mtx->nrow*mtx->ncol, mtx->entries) ;
}
return ; }
/*--------------------------------------------------------------------*/
/*
-----------------------------------
compute three checksums
sums[0] = sum of row indices
sums[1] = sum of columns indices
sums[2] = sum of entry magnitudes
created -- 98may16, cca
-----------------------------------
*/
void
DenseMtx_checksums (
DenseMtx *mtx,
double sums[]
) {
double *entries ;
int ii, ncol, nent, nrow ;
int *colind, *rowind ;
/*
---------------
check the input
---------------
*/
if ( mtx == NULL || sums == NULL ) {
fprintf(stderr, "\n fatal error in DenseMtx_checksums(%p,%p)"
"\n bad input\n", mtx, sums) ;
exit(-1) ;
}
sums[0] = sums[1] = sums[2] = 0.0 ;
DenseMtx_rowIndices(mtx, &nrow, &rowind) ;
for ( ii = 0 ; ii < nrow ; ii++ ) {
sums[0] += rowind[ii] ;
}
DenseMtx_columnIndices(mtx, &ncol, &colind) ;
for ( ii = 0 ; ii < ncol ; ii++ ) {
sums[1] += colind[ii] ;
}
entries = DenseMtx_entries(mtx) ;
nent = nrow*ncol ;
if ( DENSEMTX_IS_REAL(mtx) ) {
for ( ii = 0 ; ii < nent ; ii++ ) {
sums[2] += fabs(entries[ii]) ;
}
} else if ( DENSEMTX_IS_COMPLEX(mtx) ) {
for ( ii = 0 ; ii < nent ; ii++ ) {
sums[2] += Zabs(entries[2*ii], entries[2*ii+1]) ;
}
}
return ; }
/*--------------------------------------------------------------------*/
/*
-------------------------------------------
return the maximum magnitude of the entries
created -- 98may15, cca
-------------------------------------------
*/
double
DenseMtx_maxabs (
DenseMtx *mtx
) {
double maxabs ;
int loc ;
/*
---------------
check the input
---------------
*/
if ( mtx == NULL ) {
fprintf(stderr, "\n fatal error in DenseMtx_maxabs(%p)"
"\n bad input\n", mtx) ;
exit(-1) ;
}
if ( DENSEMTX_IS_REAL(mtx) ) {
maxabs = DVmaxabs(mtx->nrow*mtx->ncol, mtx->entries, &loc) ;
} else if ( DENSEMTX_IS_COMPLEX(mtx) ) {
maxabs = ZVmaxabs(mtx->nrow*mtx->ncol, mtx->entries) ;
} else {
fprintf(stderr, "\n fatal error in DenseMtx_maxabs(%p)"
"\n bad type %d\n", mtx, mtx->type) ;
exit(-1) ;
}
return(maxabs) ; }
/*--------------------------------------------------------------------*/
/*
--------------------------------------------
subtract one matrix from another, B := B - A
created -- 98may25, cca
--------------------------------------------
*/
void
DenseMtx_sub (
DenseMtx *mtxB,
DenseMtx *mtxA
) {
/*
---------------
check the input
---------------
*/
if ( mtxB == NULL || mtxA == NULL ) {
fprintf(stderr, "\n fatal error in DenseMtx_sub(%p,%p)"
"\n bad input\n", mtxB, mtxA) ;
exit(-1) ;
}
if ( mtxB->type != mtxA->type ) {
fprintf(stderr, "\n fatal error in DenseMtx_sub(%p,%p)"
"\n mtxB->type = %d, mtxA->type = %d\n",
mtxB, mtxA, mtxB->type, mtxA->type) ;
exit(-1) ;
}
if ( mtxB->nrow != mtxA->nrow ) {
fprintf(stderr, "\n fatal error in DenseMtx_sub(%p,%p)"
"\n mtxB->nrow = %d, mtxA->nrow = %d\n",
mtxB, mtxA, mtxB->nrow, mtxA->nrow) ;
exit(-1) ;
}
if ( mtxB->ncol != mtxA->ncol ) {
fprintf(stderr, "\n fatal error in DenseMtx_sub(%p,%p)"
"\n mtxB->ncol = %d, mtxA->ncol = %d\n",
mtxB, mtxA, mtxB->ncol, mtxA->ncol) ;
exit(-1) ;
}
if ( mtxB->entries == NULL || mtxA->entries == NULL ) {
fprintf(stderr, "\n fatal error in DenseMtx_sub(%p,%p)"
"\n mtxB->entries = %p, mtxA->entries = %p\n",
mtxB, mtxA, mtxB->entries, mtxA->entries) ;
exit(-1) ;
}
if ( DENSEMTX_IS_REAL(mtxB) ) {
DVsub(mtxB->nrow*mtxB->ncol, mtxB->entries, mtxA->entries) ;
} else if ( DENSEMTX_IS_COMPLEX(mtxB) ) {
ZVsub(mtxB->nrow*mtxB->ncol, mtxB->entries, mtxA->entries) ;
} else {
fprintf(stderr, "\n fatal error in DenseMtx_sub(%p,%p)"
"\n mtxB->type = %d, mtxA->type = %d\n",
mtxB, mtxA, mtxB->type, mtxA->type) ;
exit(-1) ;
}
return ; }
/*--------------------------------------------------------------------*/
/*
----------------------------------------------------
purpose -- to copy a row of the matrix into a vector
irow -- local row id
vec -- double vector to receive the row entries
created -- 98jul31, cca
----------------------------------------------------
*/
void
DenseMtx_copyRowIntoVector (
DenseMtx *mtx,
int irow,
double *vec
) {
double *entries ;
int inc1, inc2, jcol, jj, kk, nrow, ncol ;
int *colind, *rowind ;
/*
---------------
check the input
---------------
*/
if ( mtx == NULL || irow < 0 || vec == NULL ) {
fprintf(stderr,
"\n fatal error in DenseMtx_copyRowIntoVector()"
"\n bad input\n") ;
exit(-1) ;
}
DenseMtx_rowIndices(mtx, &nrow, &rowind) ;
if ( irow >= nrow ) {
fprintf(stderr,
"\n fatal error in DenseMtx_copyRowIntoVector()"
"\n irow = %d, nrow = %d\n", irow, nrow) ;
exit(-1) ;
}
DenseMtx_columnIndices(mtx, &ncol, &colind) ;
inc1 = DenseMtx_rowIncrement(mtx) ;
inc2 = DenseMtx_columnIncrement(mtx) ;
entries = DenseMtx_entries(mtx) ;
if ( DENSEMTX_IS_REAL(mtx) ) {
for ( jcol = jj = 0, kk = irow*inc1 ;
jcol < ncol ;
jcol++, jj++, kk += inc2 ) {
vec[jj] = entries[kk] ;
}
} else if ( DENSEMTX_IS_COMPLEX(mtx) ) {
for ( jcol = jj = 0, kk = irow*inc1 ;
jcol < ncol ;
jcol++, jj++, kk += inc2 ) {
vec[2*jj] = entries[2*kk] ;
vec[2*jj+1] = entries[2*kk+1] ;
}
}
return ; }
/*--------------------------------------------------------------------*/
/*
----------------------------------------------------
purpose -- to copy a row of the matrix into a vector
irow -- local row id
vec -- double vector to supply the row entries
created -- 98jul31, cca
----------------------------------------------------
*/
void
DenseMtx_copyVectorIntoRow (
DenseMtx *mtx,
int irow,
double *vec
) {
double *entries ;
int inc1, inc2, jcol, jj, kk, nrow, ncol ;
int *colind, *rowind ;
/*
---------------
check the input
---------------
*/
if ( mtx == NULL || irow < 0 || vec == NULL ) {
fprintf(stderr,
"\n fatal error in DenseMtx_copyVectorIntoRow()"
"\n bad input, mtx %p, irow %d, vec %p\n",
mtx, irow, vec) ;
exit(-1) ;
}
DenseMtx_rowIndices(mtx, &nrow, &rowind) ;
if ( irow >= nrow ) {
fprintf(stderr,
"\n fatal error in DenseMtx_copyVectorIntoRow()"
"\n irow = %d, nrow = %d\n", irow, nrow) ;
exit(-1) ;
}
DenseMtx_columnIndices(mtx, &ncol, &colind) ;
inc1 = DenseMtx_rowIncrement(mtx) ;
inc2 = DenseMtx_columnIncrement(mtx) ;
entries = DenseMtx_entries(mtx) ;
if ( DENSEMTX_IS_REAL(mtx) ) {
for ( jcol = jj = 0, kk = irow*inc1 ;
jcol < ncol ;
jcol++, jj++, kk += inc2 ) {
entries[kk] = vec[jj] ;
}
} else if ( DENSEMTX_IS_COMPLEX(mtx) ) {
for ( jcol = jj = 0, kk = irow*inc1 ;
jcol < ncol ;
jcol++, jj++, kk += inc2 ) {
entries[2*kk] = vec[2*jj] ;
entries[2*kk+1] = vec[2*jj+1] ;
}
}
return ; }
/*--------------------------------------------------------------------*/
/*
----------------------------------------------------
purpose -- to add a row of the matrix into a vector
irow -- local row id
vec -- double vector to supply the row entries
created -- 98aug12, cca
----------------------------------------------------
*/
void
DenseMtx_addVectorIntoRow (
DenseMtx *mtx,
int irow,
double *vec
) {
double *entries ;
int inc1, inc2, jcol, jj, kk, nrow, ncol ;
int *colind, *rowind ;
/*
---------------
check the input
---------------
*/
if ( mtx == NULL || irow < 0 || vec == NULL ) {
fprintf(stderr,
"\n fatal error in DenseMtx_addVectorIntoRow()"
"\n bad input, mtx %p, irow %d, vec %p\n",
mtx, irow, vec) ;
exit(-1) ;
}
DenseMtx_rowIndices(mtx, &nrow, &rowind) ;
if ( irow >= nrow ) {
fprintf(stderr,
"\n fatal error in DenseMtx_addVectorIntoRow()"
"\n irow = %d, nrow = %d\n", irow, nrow) ;
exit(-1) ;
}
DenseMtx_columnIndices(mtx, &ncol, &colind) ;
inc1 = DenseMtx_rowIncrement(mtx) ;
inc2 = DenseMtx_columnIncrement(mtx) ;
entries = DenseMtx_entries(mtx) ;
if ( DENSEMTX_IS_REAL(mtx) ) {
for ( jcol = jj = 0, kk = irow*inc1 ;
jcol < ncol ;
jcol++, jj++, kk += inc2 ) {
entries[kk] += vec[jj] ;
}
} else if ( DENSEMTX_IS_COMPLEX(mtx) ) {
for ( jcol = jj = 0, kk = irow*inc1 ;
jcol < ncol ;
jcol++, jj++, kk += inc2 ) {
entries[2*kk] += vec[2*jj] ;
entries[2*kk+1] += vec[2*jj+1] ;
}
}
return ; }
/*--------------------------------------------------------------------*/
|
