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//------------------------------------------------------------------------------
// GB_cast_int: parallel memcpy or int32_t/int64_t/uint32_t/uint64_t type cast
//------------------------------------------------------------------------------
// SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2025, All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
//------------------------------------------------------------------------------
#include "GB.h"
void GB_cast_int // parallel memcpy/cast of integer arrays
(
void *dest, // destination
GB_Type_code dest_code, // destination type: int32/64, or uint32/64
const void *src, // source
GB_Type_code src_code, // source type: int32/64, or uint32/64
size_t n, // # of entries to copy
int nthreads_max // max # of threads to use
)
{
//--------------------------------------------------------------------------
// get the # of threads
//--------------------------------------------------------------------------
int nthreads = GB_nthreads (n, GB_CHUNK_DEFAULT, nthreads_max) ;
int64_t k ;
//--------------------------------------------------------------------------
// copy/cast the integer array
//--------------------------------------------------------------------------
switch (dest_code)
{
//----------------------------------------------------------------------
// destination is int32_t
//----------------------------------------------------------------------
case GB_INT32_code :
switch (src_code)
{
case GB_INT32_code :
case GB_UINT32_code :
GB_memcpy (dest, src, n * sizeof (uint32_t), nthreads) ;
break ;
case GB_INT64_code :
{
int32_t *restrict Dest = (int32_t *) dest ;
const int64_t *restrict Src = (int64_t *) src ;
#include "cast/factory/GB_cast_int_template.c"
}
break ;
case GB_UINT64_code :
{
int32_t *restrict Dest = (int32_t *) dest ;
const uint64_t *restrict Src = (uint64_t *) src ;
#include "cast/factory/GB_cast_int_template.c"
}
break ;
default: ;
}
break ;
//----------------------------------------------------------------------
// destination is uint32_t
//----------------------------------------------------------------------
case GB_UINT32_code :
switch (src_code)
{
case GB_INT32_code :
case GB_UINT32_code :
GB_memcpy (dest, src, n * sizeof (uint32_t), nthreads) ;
break ;
case GB_INT64_code :
{
uint32_t *restrict Dest = (uint32_t *) dest ;
const int64_t *restrict Src = (int64_t *) src ;
#include "cast/factory/GB_cast_int_template.c"
}
break ;
case GB_UINT64_code :
{
uint32_t *restrict Dest = (uint32_t *) dest ;
const uint64_t *restrict Src = (uint64_t *) src ;
#include "cast/factory/GB_cast_int_template.c"
}
break ;
default: ;
}
break ;
//----------------------------------------------------------------------
// destination is int64_t
//----------------------------------------------------------------------
case GB_INT64_code :
switch (src_code)
{
case GB_INT32_code :
{
int64_t *restrict Dest = (int64_t *) dest ;
const int32_t *restrict Src = (int32_t *) src ;
#include "cast/factory/GB_cast_int_template.c"
}
break ;
case GB_UINT32_code :
{
int64_t *restrict Dest = (int64_t *) dest ;
const uint32_t *restrict Src = (uint32_t *) src ;
#include "cast/factory/GB_cast_int_template.c"
}
break ;
case GB_INT64_code :
case GB_UINT64_code :
GB_memcpy (dest, src, n * sizeof (uint64_t), nthreads) ;
break ;
default: ;
}
break ;
//----------------------------------------------------------------------
// destination is uint64_t
//----------------------------------------------------------------------
case GB_UINT64_code :
switch (src_code)
{
case GB_INT32_code :
{
uint64_t *restrict Dest = (uint64_t *) dest ;
const int32_t *restrict Src = (int32_t *) src ;
#include "cast/factory/GB_cast_int_template.c"
}
break ;
case GB_UINT32_code :
{
uint64_t *restrict Dest = (uint64_t *) dest ;
const uint32_t *restrict Src = (uint32_t *) src ;
#include "cast/factory/GB_cast_int_template.c"
}
break ;
case GB_INT64_code :
case GB_UINT64_code :
GB_memcpy (dest, src, n * sizeof (uint64_t), nthreads) ;
break ;
default: ;
}
break ;
default: ;
}
}
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