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/*
-- MAGMA (version 2.9.0) --
Univ. of Tennessee, Knoxville
Univ. of California, Berkeley
Univ. of Colorado, Denver
@date January 2025
@precisions normal z -> s d c
@author Hartwig Anzt
*/
#include "magmasparse_internal.h"
#define COMPLEX
#define PRECISION_z
/**
Purpose
-------
Visualizes part of a vector of type magma_z_matrix.
With input vector x , offset, visulen, the entries
offset - (offset + visulen) of x are visualized.
Arguments
---------
@param[in]
x magma_z_matrix
vector to visualize
@param[in]
offset magma_int_t
start inex of visualization
@param[in]
visulen magma_int_t
number of entries to visualize
@param[in]
queue magma_queue_t
Queue to execute in.
@ingroup magmasparse_zaux
********************************************************************/
extern "C"
magma_int_t
magma_zprint_vector(
magma_z_matrix x,
magma_int_t offset,
magma_int_t visulen,
magma_queue_t queue )
{
magma_int_t info = 0;
magma_z_matrix y={Magma_CSR};
//**************************************************************
magmaDoubleComplex c_zero = MAGMA_Z_ZERO;
#ifdef COMPLEX
#define magma_zprintval( tmp ) { \
if ( MAGMA_Z_EQUAL( tmp, c_zero )) { \
printf( " 0. \n" ); \
} \
else { \
printf( " %8.4f+%8.4fi\n", \
MAGMA_Z_REAL( tmp ), MAGMA_Z_IMAG( tmp )); \
} \
}
#else
#define magma_zprintval( tmp ) { \
if ( MAGMA_Z_EQUAL( tmp, c_zero )) { \
printf( " 0. \n" ); \
} \
else { \
printf( " %8.4f\n", MAGMA_Z_REAL( tmp )); \
} \
}
#endif
//**************************************************************
printf("visualize entries %d - %d of vector ",
int(offset), int(offset + visulen) );
fflush(stdout);
if ( x.memory_location == Magma_CPU ) {
printf("located on CPU:\n");
for( magma_int_t i=offset; i<offset + visulen; i++ )
magma_zprintval(x.val[i]);
}
else if ( x.memory_location == Magma_DEV ) {
printf("located on DEV:\n");
CHECK( magma_zmtransfer( x, &y, Magma_DEV, Magma_CPU, queue ));
for( magma_int_t i=offset; i<offset + visulen; i++ )
magma_zprintval(y.val[i]);
}
cleanup:
magma_free_cpu(y.val);
return info;
}
/**
Purpose
-------
Reads in a double vector of length "length".
Arguments
---------
@param[out]
x magma_z_matrix *
vector to read in
@param[in]
length magma_int_t
length of vector
@param[in]
filename char*
file where vector is stored
@param[in]
queue magma_queue_t
Queue to execute in.
@ingroup magmasparse_zaux
********************************************************************/
extern "C"
magma_int_t
magma_zvread(
magma_z_matrix *x,
magma_int_t length,
char * filename,
magma_queue_t queue )
{
magma_int_t info = 0;
magma_int_t nnz=0, i=0;
FILE *fid;
char buff[BUFSIZ]={0};
int count=0;
char *p;
// make sure the target structure is empty
magma_zmfree( x, queue );
x->ownership = MagmaTrue;
x->memory_location = Magma_CPU;
x->storage_type = Magma_DENSE;
x->num_rows = length;
x->num_cols = 1;
x->major = MagmaColMajor;
fid = fopen(filename, "r");
if(NULL==fgets(buff, BUFSIZ, fid))
return -1;
rewind(fid);
for( p=buff; NULL != strtok(p, " \t\n"); p=NULL)
count++;
while( !feof(fid) )
{
double VAL1;
magmaDoubleComplex VAL;
#if defined(PRECISION_z) || defined(PRECISION_d)
double VAL2;
if( count == 2 ){
fscanf(fid, "%lg %lg\n", &VAL1, &VAL2);
VAL = MAGMA_Z_MAKE(VAL1, VAL2);
}else{
fscanf(fid, "%lg\n", &VAL1);
VAL = MAGMA_Z_MAKE(VAL1, 0.0);
}
#else // single-complex or single
double VAL2;
if( count == 2 ){
fscanf(fid, "%g %g\n", &VAL1, &VAL2);
VAL = MAGMA_Z_MAKE(VAL1, VAL2);
}else{
fscanf(fid, "%g\n", &VAL1);
VAL = MAGMA_Z_MAKE(VAL1, 0.0);
}
#endif
if ( VAL != MAGMA_Z_ZERO )
nnz++;
i++;
}
x->num_rows = i;
x->nnz = i;
i=0; nnz=0; count=0;
// printf("n:%d\n");
CHECK( magma_zmalloc_cpu( &x->val, length ));
rewind(fid);
for( p=buff; NULL != strtok(p, " \t\n"); p=NULL)
count++;
//while( i<length ) // eof() is 'true' at the end of data
while( !feof(fid) )
{
double VAL1;
magmaDoubleComplex VAL;
#if defined(PRECISION_z) || defined(PRECISION_d)
double VAL2;
if( count == 2 ){
fscanf(fid, "%lg %lg\n", &VAL1, &VAL2);
VAL = MAGMA_Z_MAKE(VAL1, VAL2);
}else{
fscanf(fid, "%lg\n", &VAL1);
VAL = MAGMA_Z_MAKE(VAL1, 0.0);
}
#else // single-complex or single
double VAL2;
if( count == 2 ){
fscanf(fid, "%g %g\n", &VAL1, &VAL2);
VAL = MAGMA_Z_MAKE(VAL1, VAL2);
}else{
fscanf(fid, "%g\n", &VAL1);
VAL = MAGMA_Z_MAKE(VAL1, 0.0);
}
#endif
if ( VAL != MAGMA_Z_ZERO )
nnz++;
x->val[i] = VAL;
i++;
}
fclose(fid);
// magma_zprint_vector( *x, 0, x->num_rows, queue );
cleanup:
return info;
}
/**
Purpose
-------
Reads in a sparse vector-block stored in COO format.
Arguments
---------
@param[out]
x magma_z_matrix *
vector to read in
@param[in]
filename char*
file where vector is stored
@param[in]
queue magma_queue_t
Queue to execute in.
@ingroup magmasparse_zaux
********************************************************************/
extern "C"
magma_int_t
magma_zvspread(
magma_z_matrix *x,
const char * filename,
magma_queue_t queue )
{
magma_int_t info = 0;
magma_z_matrix A={Magma_CSR}, B={Magma_CSR};
magma_int_t entry=0;
magma_zmfree( x, queue );
x->ownership = MagmaTrue;
// char *vfilename[] = {"/mnt/sparse_matrices/mtx/rail_79841_B.mtx"};
CHECK( magma_z_csr_mtx( &A, filename, queue ));
CHECK( magma_zmconvert( A, &B, Magma_CSR, Magma_DENSE, queue ));
CHECK( magma_zvinit( x, Magma_CPU, A.num_cols, A.num_rows, MAGMA_Z_ZERO, queue ));
x->major = MagmaRowMajor;
for(magma_int_t i=0; i<A.num_cols; i++) {
for(magma_int_t j=0; j<A.num_rows; j++) {
x->val[i*A.num_rows+j] = B.val[ i+j*A.num_cols ];
entry++;
}
}
x->num_rows = A.num_rows;
x->num_cols = A.num_cols;
cleanup:
magma_zmfree( &A, queue );
magma_zmfree( &B, queue );
return info;
}
/**
Purpose
-------
Writes a vector to a file.
Arguments
---------
@param[in]
A magma_z_matrix
matrix to write out
@param[in]
filename const char*
output-filname of the mtx matrix
@param[in]
queue magma_queue_t
Queue to execute in.
@ingroup magmasparse_zaux
********************************************************************/
extern "C"
magma_int_t
magma_zwrite_vector(
magma_z_matrix A,
const char *filename,
magma_queue_t queue )
{
magma_int_t i, info = 0;
FILE *fp;
fp = fopen(filename, "w");
if ( fp == NULL ){
printf("\n%% error writing vector: file exists or missing write permission\n");
info = -1;
goto cleanup;
}
#define COMPLEX
#ifdef COMPLEX
// complex case
for(i=0; i < A.num_rows; i++) {
fprintf( fp, "%.16g %.16g\n",
MAGMA_Z_REAL((A.val)[i]),
MAGMA_Z_IMAG((A.val)[i]) );
}
#else
for(i=0; i < A.num_rows; i++) {
fprintf( fp, "%.16g\n",
MAGMA_Z_REAL((A.val)[i]) );
}
#endif
if (fclose(fp) != 0)
printf("\n%% error: writing matrix failed\n");
else
info = 0;
cleanup:
return info;
}
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