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/*********************************************************************
Arithmetic operations on data structures.
This is part of GNU Astronomy Utilities (Gnuastro) package.
Original author:
Mohammad Akhlaghi <mohammad@akhlaghi.org>
Contributing author(s):
Copyright (C) 2015-2025 Free Software Foundation, Inc.
Gnuastro is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation, either version 3 of the License, or (at your
option) any later version.
Gnuastro is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with Gnuastro. If not, see <http://www.gnu.org/licenses/>.
**********************************************************************/
#ifndef __ARITHMETIC_BINARY_H__
#define __ARITHMETIC_BINARY_H__
/************************************************************************/
/************* Low-level operators *****************/
/************************************************************************/
/* Final step to be used by all operators and all types. */
#define BINARY_OP_OT_RT_LT_SET(OP, OT, LT, RT) { \
LT lb, *la=l->array; \
RT rb, *ra=r->array; \
OT ob, *oa=o->array, *of=oa + o->size; \
if(checkblank) \
{ \
gal_blank_write(&lb, l->type); \
gal_blank_write(&rb, r->type); \
gal_blank_write(&ob, o->type); \
do \
{ \
if(lb==lb && rb==rb)/* Both are integers. */ \
*oa = (*la!=lb && *ra!=rb) ? *la OP *ra : ob ; \
else if(lb==lb) /* Only left operand is an integer. */ \
*oa = (*la!=lb && *ra==*ra) ? *la OP *ra : ob; \
else /* Only right operand is an integer. */ \
*oa = (*la==*la && *ra!=rb) ? *la OP *ra : ob; \
if(l->size>1) ++la; \
if(r->size>1) ++ra; \
} \
while(++oa<of); \
} \
else \
{ \
if(l->size==r->size) do *oa = *la++ OP *ra++; while(++oa<of); \
else if(l->size==1) do *oa = *la OP *ra++; while(++oa<of); \
else do *oa = *la++ OP *ra; while(++oa<of); \
} \
}
/* Blank values aren't defined for integer operators. */
#define BINARY_INT_OP_OT_RT_LT_SET(OP, OT, LT, RT) { \
LT *la=l->array; \
RT *ra=r->array; \
OT *oa=o->array, *of=oa + o->size; \
if(l->size==r->size) do *oa = *la++ OP *ra++; while(++oa<of); \
else if(l->size==1) do *oa = *la OP *ra++; while(++oa<of); \
else do *oa = *la++ OP *ra; while(++oa<of); \
}
/* This is for operators like '&&' and '||', where the right operator is
not necessarily read (and thus incremented). */
#define BINARY_OP_INCR_OT_RT_LT_SET(OP, OT, LT, RT) { \
LT *la=l->array; \
RT *ra=r->array; \
OT *oa=o->array, *of=oa + o->size; \
if(l->size==r->size) do {*oa = *la++ OP *ra; ++ra;} while(++oa<of); \
else if(l->size==1) do {*oa = *la OP *ra; ++ra;} while(++oa<of); \
else do *oa = *la++ OP *ra; while(++oa<of); \
}
/************************************************************************/
/************* Type specifiers *****************/
/************************************************************************/
/* Flags for BINARY_OP_RT_LT_SET to identify the output type. */
enum arithmetic_binary_outtype_flags
{
ARITHMETIC_BINARY_INVALID, /* ==0 by C standard. */
ARITHMETIC_BINARY_OUT_TYPE_LEFT,
ARITHMETIC_BINARY_OUT_TYPE_RIGHT,
ARITHMETIC_BINARY_OUT_TYPE_UINT8,
ARITHMETIC_BINARY_OUT_TYPE_INCR_SEP,
};
/* For operators whose type may be any of the given inputs only for
integers. For integer operators we have less options. */
#define BINARY_SET_OUT_INT(F, OP, LT, RT) \
switch(F) \
{ \
case ARITHMETIC_BINARY_OUT_TYPE_LEFT: \
BINARY_INT_OP_OT_RT_LT_SET(OP, LT, LT, RT); \
break; \
case ARITHMETIC_BINARY_OUT_TYPE_RIGHT: \
BINARY_INT_OP_OT_RT_LT_SET(OP, RT, LT, RT); \
break; \
default: \
error(EXIT_FAILURE, 0, "%s: a bug! please contact us at %s to " \
"address the problem. %d not recognized for 'F'", \
"BINARY_SET_OUT_INT", PACKAGE_BUGREPORT, F); \
}
/* For operators whose type may be any of the given inputs. */
#define BINARY_SET_OUT(F, OP, LT, RT) \
switch(F) \
{ \
case ARITHMETIC_BINARY_OUT_TYPE_LEFT: \
BINARY_OP_OT_RT_LT_SET(OP, LT, LT, RT); \
break; \
case ARITHMETIC_BINARY_OUT_TYPE_RIGHT: \
BINARY_OP_OT_RT_LT_SET(OP, RT, LT, RT); \
break; \
case ARITHMETIC_BINARY_OUT_TYPE_UINT8: \
BINARY_OP_OT_RT_LT_SET(OP, uint8_t, LT, RT); \
break; \
case ARITHMETIC_BINARY_OUT_TYPE_INCR_SEP: \
BINARY_OP_INCR_OT_RT_LT_SET(OP, uint8_t, LT, RT); \
break; \
default: \
error(EXIT_FAILURE, 0, "%s: a bug! please contact us at %s to " \
"address the problem. %d not recognized for 'F'", \
"BINARY_SET_OUT", PACKAGE_BUGREPORT, F); \
}
/* Set the right operator type only for integers (integer operators can't
take floating point types). So floating point types must not be in the
list of possibilities. */
#define BINARY_SET_RT_INT(F, OP, LT) \
switch(r->type) \
{ \
case GAL_TYPE_UINT8: BINARY_SET_OUT_INT( F, OP, LT, uint8_t ) break; \
case GAL_TYPE_INT8: BINARY_SET_OUT_INT( F, OP, LT, int8_t ) break; \
case GAL_TYPE_UINT16: BINARY_SET_OUT_INT( F, OP, LT, uint16_t ) break; \
case GAL_TYPE_INT16: BINARY_SET_OUT_INT( F, OP, LT, int16_t ) break; \
case GAL_TYPE_UINT32: BINARY_SET_OUT_INT( F, OP, LT, uint32_t ) break; \
case GAL_TYPE_INT32: BINARY_SET_OUT_INT( F, OP, LT, int32_t ) break; \
case GAL_TYPE_UINT64: BINARY_SET_OUT_INT( F, OP, LT, uint64_t ) break; \
case GAL_TYPE_INT64: BINARY_SET_OUT_INT( F, OP, LT, int64_t ) break; \
default: \
error(EXIT_FAILURE, 0, "%s: a bug! Please contact us at %s to " \
"address the problem. %d is not a usable type code", \
"BINARY_SET_RT", PACKAGE_BUGREPORT, r->type); \
}
/* Set the right operator type. */
#define BINARY_SET_RT(F, OP, LT) \
switch(r->type) \
{ \
case GAL_TYPE_UINT8: BINARY_SET_OUT( F, OP, LT, uint8_t ) break; \
case GAL_TYPE_INT8: BINARY_SET_OUT( F, OP, LT, int8_t ) break; \
case GAL_TYPE_UINT16: BINARY_SET_OUT( F, OP, LT, uint16_t ) break; \
case GAL_TYPE_INT16: BINARY_SET_OUT( F, OP, LT, int16_t ) break; \
case GAL_TYPE_UINT32: BINARY_SET_OUT( F, OP, LT, uint32_t ) break; \
case GAL_TYPE_INT32: BINARY_SET_OUT( F, OP, LT, int32_t ) break; \
case GAL_TYPE_UINT64: BINARY_SET_OUT( F, OP, LT, uint64_t ) break; \
case GAL_TYPE_INT64: BINARY_SET_OUT( F, OP, LT, int64_t ) break; \
case GAL_TYPE_FLOAT32: BINARY_SET_OUT( F, OP, LT, float ) break; \
case GAL_TYPE_FLOAT64: BINARY_SET_OUT( F, OP, LT, double ) break; \
default: \
error(EXIT_FAILURE, 0, "%s: a bug! Please contact us at %s to " \
"address the problem. %d is not a usable type code", \
"BINARY_SET_RT", PACKAGE_BUGREPORT, r->type); \
}
/* Set the left operator type only for integers (integer operators can't
take floating point types). So floating point types must not be in the
list of possibilities. */
#define BINARY_SET_LT_INT(F, OP) \
switch(l->type) \
{ \
case GAL_TYPE_UINT8: BINARY_SET_RT_INT( F, OP, uint8_t ) break; \
case GAL_TYPE_INT8: BINARY_SET_RT_INT( F, OP, int8_t ) break; \
case GAL_TYPE_UINT16: BINARY_SET_RT_INT( F, OP, uint16_t ) break; \
case GAL_TYPE_INT16: BINARY_SET_RT_INT( F, OP, int16_t ) break; \
case GAL_TYPE_UINT32: BINARY_SET_RT_INT( F, OP, uint32_t ) break; \
case GAL_TYPE_INT32: BINARY_SET_RT_INT( F, OP, int32_t ) break; \
case GAL_TYPE_UINT64: BINARY_SET_RT_INT( F, OP, uint64_t ) break; \
case GAL_TYPE_INT64: BINARY_SET_RT_INT( F, OP, int64_t ) break; \
default: \
error(EXIT_FAILURE, 0, "%s: a bug! Please contact us at %s to " \
"address the problem. %d is not a usable type code", \
"BINARY_SET_LT_INT", PACKAGE_BUGREPORT, l->type); \
}
/* Set the left operator type. */
#define BINARY_SET_LT(F, OP) \
switch(l->type) \
{ \
case GAL_TYPE_UINT8: BINARY_SET_RT( F, OP, uint8_t ) break; \
case GAL_TYPE_INT8: BINARY_SET_RT( F, OP, int8_t ) break; \
case GAL_TYPE_UINT16: BINARY_SET_RT( F, OP, uint16_t ) break; \
case GAL_TYPE_INT16: BINARY_SET_RT( F, OP, int16_t ) break; \
case GAL_TYPE_UINT32: BINARY_SET_RT( F, OP, uint32_t ) break; \
case GAL_TYPE_INT32: BINARY_SET_RT( F, OP, int32_t ) break; \
case GAL_TYPE_UINT64: BINARY_SET_RT( F, OP, uint64_t ) break; \
case GAL_TYPE_INT64: BINARY_SET_RT( F, OP, int64_t ) break; \
case GAL_TYPE_FLOAT32: BINARY_SET_RT( F, OP, float ) break; \
case GAL_TYPE_FLOAT64: BINARY_SET_RT( F, OP, double ) break; \
default: \
error(EXIT_FAILURE, 0, "%s: a bug! Please contact us at %s to " \
"address the problem. %d is not a usable type code", \
"BINARY_SET_LT", PACKAGE_BUGREPORT, l->type); \
}
#endif
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