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//------------------------------------------------------------------------------
// GB_stringify_mask: construct macros to access the mask
//------------------------------------------------------------------------------
// 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"
//------------------------------------------------------------------------------
// GB_stringify_mask: return string to define mask macros
//------------------------------------------------------------------------------
void GB_stringify_mask // return string to define mask macros
(
// input:
FILE *fp, // File to write macros, assumed open already
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
)
{
int mask_ecode ;
printf ("GB_stringify_mask gets mcode: %d\n", mcode) ;
// get mask_ecode from mask type (mask_ecode) and mask descriptor
GB_enumify_mask (&mask_ecode, mcode, Mask_struct, Mask_comp) ;
// convert ecode to string containing mask macros
GB_macrofy_mask ( fp, mask_ecode) ;
}
//------------------------------------------------------------------------------
// GB_enumify_mask: return mask_ecode to define mask macros
//------------------------------------------------------------------------------
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)
printf ("GB_enumify_mask gets mcode: %d Mask_struct: %d Mask_comp: %d\n",
mcode, Mask_struct, Mask_comp) ;
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 ;
}
//------------------------------------------------------------------------------
// GB_macrofy_mask: return string to define mask macros
//------------------------------------------------------------------------------
void GB_macrofy_mask // return enum to define mask macros
(
// input
FILE *fp, // File to write macros, assumed open already
int mask_ecode // enumified mask
)
{
const char *f ;
printf ("GB_macrofy_mask gets mask_ecode: %d\n", mask_ecode) ;
switch (mask_ecode)
{
//----------------------------------------------------------------------
// no mask
//----------------------------------------------------------------------
case 0 : // mask not complemented
f = "#define GB_MTYPE (no mask present)\n"
"#define MX(p) (no mask present)\n"
"#define GB_MASK_COMP false\n"
"#define GB_NO_MASK true" ;
break ;
case 1 : // mask complemented
f = "#define GB_MTYPE (no mask present)\n"
"#define MX(p) (no mask present)\n"
"#define GB_MASK_COMP true\n"
"#define GB_NO_MASK true" ;
break ;
//----------------------------------------------------------------------
// M is present, and structural (not valued)
//----------------------------------------------------------------------
case 2 :
// mask not complemented, type: structural
f = "#define GB_MTYPE void\n"
"#define MX(p) true\n"
"#define GB_MASK_COMP false\n"
"#define GB_NO_MASK false" ;
break ;
case 3 :
// mask complemented, type: structural
f = "#define GB_MTYPE void\n"
"#define MX(p) true\n"
"#define GB_MASK_COMP true\n"
"#define GB_NO_MASK false" ;
break ;
//----------------------------------------------------------------------
// M is present, valued, size: 1 byte
//----------------------------------------------------------------------
case 4 :
// mask not complemented, type: bool, int8, uint8
f = "#define GB_MTYPE uint8_t\n"
"#define MX(p) (Mx [p] != 0)\n"
"#define GB_MASK_COMP false\n"
"#define GB_NO_MASK false" ;
break ;
case 5 :
// mask complemented, type: bool, int8, uint8
f = "#define GB_MTYPE uint8_t\n"
"#define MX(p) (Mx [p] != 0)\n"
"#define GB_MASK_COMP true\n"
"#define GB_NO_MASK false" ;
break ;
//----------------------------------------------------------------------
// M is present, valued, size: 2 bytes
//----------------------------------------------------------------------
case 6 :
// mask not complemented, type: int16, uint16
f = "#define GB_MTYPE uint16_t\n"
"#define MX(p) (Mx [p] != 0)\n"
"#define GB_MASK_COMP false\n"
"#define GB_NO_MASK false" ;
break ;
case 7 :
// mask complemented, type: int16, uint16
f = "#define GB_MTYPE uint16_t\n"
"#define MX(p) (Mx [p] != 0)\n"
"#define GB_MASK_COMP true\n"
"#define GB_NO_MASK false" ;
break ;
//----------------------------------------------------------------------
// M is present, valued, size: 4 bytes
//----------------------------------------------------------------------
case 8 :
// mask not complemented, type: float, int32, uint32
f = "#define GB_MTYPE uint32_t\n"
"#define MX(p) (Mx [p] != 0)\n"
"#define GB_MASK_COMP false\n"
"#define GB_NO_MASK false" ;
break ;
case 9 :
// mask complemented, type: float, int32, uint32
f = "#define GB_MTYPE uint32_t\n"
"#define MX(p) (Mx [p] != 0)\n"
"#define GB_MASK_COMP true\n"
"#define GB_NO_MASK false" ;
break ;
//----------------------------------------------------------------------
// M is present, valued, size: 8 bytes
//----------------------------------------------------------------------
case 10 :
// mask not complemented, type: double, float complex, int64, uint64
f = "#define GB_MTYPE uint64_t\n"
"#define MX(p) (Mx [p] != 0)\n"
"#define GB_MASK_COMP false\n"
"#define GB_NO_MASK false" ;
break ;
case 11 :
// mask complemented, type: double, float complex, int64, uint64
f = "#define GB_MTYPE uint64_t\n"
"#define MX(p) (Mx [p] != 0)\n"
"#define GB_MASK_COMP true\n"
"#define GB_NO_MASK false" ;
break ;
//----------------------------------------------------------------------
// M is present, valued, size: 16 bytes
//----------------------------------------------------------------------
case 12 :
// mask not complemented, type: double complex
f = "#define GB_MTYPE uint64_t\n"
"#define MX(p) (Mx [2*(p)] != 0 || Mx [2*(p)+1] != 0)\n"
"#define GB_MASK_COMP false\n"
"#define GB_NO_MASK false" ;
break ;
case 13 :
// mask complemented, type: double complex
f = "#define GB_MTYPE uint64_t\n"
"#define MX(p) (Mx [2*(p)] != 0 || Mx [2*(p)+1] != 0)\n"
"#define GB_MASK_COMP true\n"
"#define GB_NO_MASK false" ;
break ;
//----------------------------------------------------------------------
// invalid case
//----------------------------------------------------------------------
default: ;
f = "#error undefined mask behavior" ;
break ;
}
printf ("HERE is the Mask stuff:\n%s\n", f) ;
fprintf( fp, "%s\n", f ) ;
}
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