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//------------------------------------------------------------------------------
// GB_macrofy_cast_expression: construct a typecasting string
//------------------------------------------------------------------------------
// SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2025, All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
//------------------------------------------------------------------------------
// Return a typecast expression to cast from xtype to ztype.
#include "GB.h"
#include "math/GB_math.h"
#include "jitifyer/GB_stringify.h"
const char *GB_macrofy_cast_expression // return cast expression
(
FILE *fp,
// input:
GrB_Type ztype, // output type
GrB_Type xtype, // input type
// output
int *nargs // # of string arguments in output format
)
{
//--------------------------------------------------------------------------
// get inputs
//--------------------------------------------------------------------------
(*nargs) = 2 ;
const char *f = NULL ;
ASSERT (ztype != NULL) ;
ASSERT (xtype != NULL) ;
const GB_Type_code zcode = ztype->code ;
const GB_Type_code xcode = xtype->code ;
if (zcode == xcode)
{
//----------------------------------------------------------------------
// no typecasting
//----------------------------------------------------------------------
// user-defined types come here, and require type->defn and type->name
// to both be defined. If the user-defined type has no name or defn,
// then no JIT kernel can be created for it.
ASSERT (GB_IMPLIES (zcode == GB_UDT_code, (ztype == xtype) &&
ztype->name != NULL && ztype->defn != NULL)) ;
f = "%s = %s" ;
}
else if (zcode == GB_BOOL_code)
{
//----------------------------------------------------------------------
// typecast to boolean
//----------------------------------------------------------------------
if (xcode == GB_FC32_code)
{
f = "%s = (GB_crealf (%s) != 0 || GB_cimagf (%s) != 0)" ;
(*nargs) = 3 ;
}
else if (xcode == GB_FC64_code)
{
f = "%s = (GB_creal (%s) != 0 || GB_cimag (%s) != 0)" ;
(*nargs) = 3 ;
}
else
{
f = "%s = ((%s) != 0)" ;
}
}
else if ((zcode >= GB_INT8_code && zcode <= GB_UINT64_code)
&& (xcode >= GB_FP32_code && zcode <= GB_FC64_code))
{
//----------------------------------------------------------------------
// typecast to integer from floating-point
//----------------------------------------------------------------------
switch (zcode)
{
case GB_INT8_code :
switch (xcode)
{
case GB_FP32_code :
f = "%s = GJ_cast_to_int8 ((double) (%s))" ;
break ;
case GB_FP64_code :
f = "%s = GJ_cast_to_int8 (%s)" ;
break ;
case GB_FC32_code :
f = "%s = GJ_cast_to_int8 ((double) GB_crealf (%s))" ;
break ;
case GB_FC64_code :
f = "%s = GJ_cast_to_int8 (GB_creal (%s))" ;
break ;
default:;
}
GB_macrofy_defn (fp, 0, "GJ_cast_to_int8",
GJ_cast_to_int8_DEFN) ;
break ;
case GB_INT16_code :
switch (xcode)
{
case GB_FP32_code :
f = "%s = GJ_cast_to_int16 ((double) (%s))" ;
break ;
case GB_FP64_code :
f = "%s = GJ_cast_to_int16 (%s)" ;
break ;
case GB_FC32_code :
f = "%s = GJ_cast_to_int16 ((double) GB_crealf (%s))" ;
break ;
case GB_FC64_code :
f = "%s = GJ_cast_to_int16 (GB_creal (%s))" ;
break ;
default:;
}
GB_macrofy_defn (fp, 0, "GJ_cast_to_int16",
GJ_cast_to_int16_DEFN) ;
break ;
case GB_INT32_code :
switch (xcode)
{
case GB_FP32_code :
f = "%s = GJ_cast_to_int32 ((double) (%s))" ;
break ;
case GB_FP64_code :
f = "%s = GJ_cast_to_int32 (%s)" ;
break ;
case GB_FC32_code :
f = "%s = GJ_cast_to_int32 ((double) GB_crealf (%s))" ;
break ;
case GB_FC64_code :
f = "%s = GJ_cast_to_int32 (GB_creal (%s))" ;
break ;
default:;
}
GB_macrofy_defn (fp, 0, "GJ_cast_to_int32",
GJ_cast_to_int32_DEFN) ;
break ;
case GB_INT64_code :
switch (xcode)
{
case GB_FP32_code :
f = "%s = GJ_cast_to_int64 ((double) (%s))" ;
break ;
case GB_FP64_code :
f = "%s = GJ_cast_to_int64 (%s)" ;
break ;
case GB_FC32_code :
f = "%s = GJ_cast_to_int64 ((double) GB_crealf (%s))" ;
break ;
case GB_FC64_code :
f = "%s = GJ_cast_to_int64 (GB_creal (%s))" ;
break ;
default:;
}
GB_macrofy_defn (fp, 0, "GJ_cast_to_int64",
GJ_cast_to_int64_DEFN) ;
break ;
case GB_UINT8_code :
switch (xcode)
{
case GB_FP32_code :
f = "%s = GJ_cast_to_uint8 ((double) (%s))" ;
break ;
case GB_FP64_code :
f = "%s = GJ_cast_to_uint8 (%s)" ;
break ;
case GB_FC32_code :
f = "%s = GJ_cast_to_uint8 ((double) GB_crealf (%s))" ;
break ;
case GB_FC64_code :
f = "%s = GJ_cast_to_uint8 (GB_creal (%s))" ;
break ;
default:;
}
GB_macrofy_defn (fp, 0, "GJ_cast_to_uint8",
GJ_cast_to_uint8_DEFN) ;
break ;
case GB_UINT16_code :
switch (xcode)
{
case GB_FP32_code :
f = "%s = GJ_cast_to_uint16 ((double) (%s))" ;
break ;
case GB_FP64_code :
f = "%s = GJ_cast_to_uint16 (%s)" ;
break ;
case GB_FC32_code :
f = "%s = GJ_cast_to_uint16 ((double) GB_crealf (%s))" ;
break ;
case GB_FC64_code :
f = "%s = GJ_cast_to_uint16 (GB_creal (%s))" ;
break ;
default:;
}
GB_macrofy_defn (fp, 0, "GJ_cast_to_uint16",
GJ_cast_to_uint16_DEFN) ;
break ;
case GB_UINT32_code :
switch (xcode)
{
case GB_FP32_code :
f = "%s = GJ_cast_to_uint32 ((double) (%s))" ;
break ;
case GB_FP64_code :
f = "%s = GJ_cast_to_uint32 (%s)" ;
break ;
case GB_FC32_code :
f = "%s = GJ_cast_to_uint32 ((double) GB_crealf (%s))" ;
break ;
case GB_FC64_code :
f = "%s = GJ_cast_to_uint32 (GB_creal (%s))" ;
break ;
default:;
}
GB_macrofy_defn (fp, 0, "GJ_cast_to_uint32",
GJ_cast_to_uint32_DEFN) ;
break ;
case GB_UINT64_code :
switch (xcode)
{
case GB_FP32_code :
f = "%s = GJ_cast_to_uint64 ((double) (%s))" ;
break ;
case GB_FP64_code :
f = "%s = GJ_cast_to_uint64 (%s)" ;
break ;
case GB_FC32_code :
f = "%s = GJ_cast_to_uint64 ((double) GB_crealf (%s))" ;
break ;
case GB_FC64_code :
f = "%s = GJ_cast_to_uint64 (GB_creal (%s))" ;
break ;
default:;
}
GB_macrofy_defn (fp, 0, "GJ_cast_to_uint64",
GJ_cast_to_uint64_DEFN) ;
break ;
default:;
}
}
else
{
//----------------------------------------------------------------------
// all other cases: use C11 typecasting rules
//----------------------------------------------------------------------
f = NULL ;
(*nargs) = 0 ;
}
return (f) ;
}
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