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//------------------------------------------------------------------------------
// GB_enumify_mask: return mask_ecode to define mask macros
//------------------------------------------------------------------------------
// SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2021, All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
//------------------------------------------------------------------------------
// User-defined types cannot be used as a valued mask. They can be used
// as structural masks.
#include "GB.h"
#include "GB_stringify.h"
void GB_enumify_mask // return enum to define mask macros
(
// output:
int *mask_ecode, // enumified mask
// input
const GB_Type_code mcode, // typecode of the mask matrix M,
// or 0 if M is not present
bool Mask_struct, // true if M structural, false if valued
bool Mask_comp // true if M complemented
)
{
// Mask_comp becomes the least significant bit, so that
// Mask_comp = (mask_ecode & 0x1) can be computed later.
// Mask_struct = (mask_ecode == 2 || mask_ecode == 3)
int e = -1 ;
if (mcode == 0)
{
//----------------------------------------------------------------------
// no mask is present
//----------------------------------------------------------------------
// Mask_struct is ignored, but the mask may be complemented or not
// user-defined types are OK. The values of M are not accessed.
e = (!Mask_comp) ? 0 : 1 ;
}
else if (Mask_struct)
{
//----------------------------------------------------------------------
// M is present, and structural (not valued).
//----------------------------------------------------------------------
// user-defined types are OK. The values of M are not accessed.
e = (!Mask_comp) ? 2 : 3 ;
}
else
{
//----------------------------------------------------------------------
// M is present, and valued
//----------------------------------------------------------------------
switch (mcode)
{
case GB_BOOL_code:
case GB_INT8_code:
case GB_UINT8_code:
// valued mask, values are 1 byte in size
e = (!Mask_comp) ? 4 : 5 ;
break ;
case GB_INT16_code:
case GB_UINT16_code:
// valued mask, values are 2 bytes in size
e = (!Mask_comp) ? 6 : 7 ;
break ;
case GB_INT32_code:
case GB_UINT32_code:
case GB_FP32_code:
// valued mask, values are 4 bytes in size
e = (!Mask_comp) ? 8 : 9 ;
break ;
case GB_INT64_code:
case GB_UINT64_code:
case GB_FC32_code:
case GB_FP64_code:
// valued mask, values are 8 bytes in size
e = (!Mask_comp) ? 10 : 11 ;
break ;
case GB_FC64_code:
// valued mask, values are 16 bytes in size
e = (!Mask_comp) ? 12 : 13 ;
break ;
default: ;
// user-defined types are not allowed
e = -1 ;
break ;
}
}
(*mask_ecode) = e ;
}
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