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//------------------------------------------------------------------------------
// GB_macrofy_bytes: create a single scalar from an array of bytes
//------------------------------------------------------------------------------
// SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2021, All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
//------------------------------------------------------------------------------
// When the macro is used, sizeof (ztype) must be the same as nbytes
#include "GB.h"
#include "GB_stringify.h"
void GB_macrofy_bytes
(
// input:
FILE *fp, // File to write macros, assumed open already
const char *Name, // all-upper-case name
const char *type_name, // name of the type
const uint8_t *value, // array of size nbytes
size_t nbytes
)
{
fprintf (fp,
"#define GB_DECLARE_%s(z) %s z ; \\\n"
" { \\\n"
" const uint8_t bytes [%d] = \\\n"
" { \\\n"
" ",
Name, type_name, (int) nbytes) ;
for (int k = 0 ; k < nbytes ; k++)
{
fprintf (fp, "0x%02x", (int) (value [k])) ;
if (k < nbytes-1)
{
fprintf (fp, ", ") ;
if (k > 0 && k % 8 == 7) fprintf (fp, "\\\n ") ;
}
}
// finalize the array and use memcpy to initialize the scalar
fprintf (fp,
" \\\n"
" } ; \\\n"
" memcpy (&z, bytes, %d) ; \\\n"
" }\n",
(int) nbytes) ;
}
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