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- # /* Copyright (C) 2002
- # * Housemarque Oy
- # * http://www.housemarque.com
- # *
- # * Distributed under the Boost Software License, Version 1.0. (See
- # * accompanying file LICENSE_1_0.txt or copy at
- # * http://www.boost.org/LICENSE_1_0.txt)
- # */
- #
- # /* Revised by Paul Mensonides (2002) */
- #
- # /* See http://www.boost.org for most recent version. */
- #
- # /* This example implements over 2200 functions for 1-dimensional arithmetic
- # * array manipulation in C. The idea is to use preprocessor data structures,
- # * lists, and tuples for storing metainformation to be used for generating
- # * the actual C code.
- # *
- # * Who needs templates anyway? :)
- # *
- # * Compile with any C compiler with a standards conforming preprocessor.
- # */
- #
- # include <boost/preprocessor/comparison/less.hpp>
- # include <boost/preprocessor/control/if.hpp>
- # include <boost/preprocessor/list/at.hpp>
- # include <boost/preprocessor/list/cat.hpp>
- # include <boost/preprocessor/list/for_each_product.hpp>
- # include <boost/preprocessor/logical/or.hpp>
- # include <boost/preprocessor/tuple/to_list.hpp>
- # include <boost/preprocessor/tuple/eat.hpp>
- #
- # /* Information about C operators */
- #
- # /* Accessors for the operator datatype. */
- # define OP_SYMBOL(O) BOOST_PP_TUPLE_ELEM(5, 0, O)
- # define OP_NAME(O) BOOST_PP_TUPLE_ELEM(5, 1, O)
- # define OP_IS_FLOATING(O) BOOST_PP_TUPLE_ELEM(5, 2, O)
- # define OP_IS_LOGICAL(O) BOOST_PP_TUPLE_ELEM(5, 3, O)
- # define OP_IS_SHIFT(O) BOOST_PP_TUPLE_ELEM(5, 4, O)
- #
- # /* List of applicative unary operators. */
- # define APPLICATIVE_UNARY_OPS \
- BOOST_PP_TUPLE_TO_LIST( \
- 3, \
- ( \
- ( ! , logical_not, 1, 1, 0), \
- ( ~ , bitwise_not, 0, 0, 0), \
- ( - , neg, 1, 0, 0) \
- ) \
- ) \
- /**/
- #
- # /* List of applicative binary operators. */
- # define APPLICATIVE_BINARY_OPS \
- BOOST_PP_TUPLE_TO_LIST( \
- 18, \
- ( \
- ( * , mul ,1 ,0 ,0), \
- ( / , div ,1 ,0 ,0), \
- ( % , mod ,0 ,0 ,0), \
- ( + , add ,1 ,0 ,0), \
- ( - , sub ,1 ,0 ,0), \
- ( << , shift_left ,0 ,0 ,1), \
- ( >> , shift_right ,0 ,0 ,1), \
- ( < , less ,1 ,1 ,0), \
- ( <= , less_equal ,1 ,1 ,0), \
- ( >= , greater_equal ,1 ,1 ,0), \
- ( > , greater ,1 ,1 ,0), \
- ( == , equal ,1 ,1 ,0), \
- ( != , not_equal ,1 ,1 ,0), \
- ( & , bitwise_and ,0 ,0 ,0), \
- ( | , bitwise_or ,0 ,0 ,0), \
- ( ^ , bitwise_xor ,0 ,0 ,0), \
- ( && , logical_and ,1 ,1 ,0), \
- ( || , logical_or ,1 ,1 ,0) \
- ) \
- ) \
- /**/
- #
- # /* Information about C built-in types. */
- #
- # /* Accessors for the type datatype. */
- # define TYPE_NAME(T) BOOST_PP_TUPLE_ELEM(4, 0, T)
- # define TYPE_ABBREVIATION(T) BOOST_PP_TUPLE_ELEM(4, 1, T)
- # define TYPE_IS_FLOATING(T) BOOST_PP_TUPLE_ELEM(4, 2, T)
- # define TYPE_RANK(T) BOOST_PP_TUPLE_ELEM(4, 3, T)
- #
- # /* List of C built-in types. */
- # define BUILTIN_TYPES \
- BOOST_PP_TUPLE_TO_LIST( \
- 12, \
- ( \
- ( signed char ,sc, 0, 1), \
- ( char ,ch, 0, 1), \
- ( unsigned char ,uc, 0, 1), \
- ( short ,ss, 0, 2), \
- ( unsigned short ,us, 0, 2), \
- TYPE_INT, \
- ( unsigned ,ui, 0, 4), \
- ( long ,sl, 0, 5), \
- ( unsigned long ,ul, 0, 6), \
- ( float ,fl, 1, 7), \
- ( double ,db, 1, 8), \
- ( long double ,ld, 1, 9) \
- ) \
- ) \
- /**/
- #
- # /* Type int is needed in some type computations. */
- # define TYPE_INT (int, si, 0, 3)
- #
- # /* Type computation macros. */
- # define TYPE_OF_INTEGER_PROMOTION(T) \
- BOOST_PP_IF( \
- BOOST_PP_LESS(TYPE_RANK(T), TYPE_RANK(TYPE_INT)), \
- TYPE_INT, T \
- ) \
- /**/
- # define TYPE_OF_USUAL_ARITHMETIC_CONVERSION(L, R) \
- TYPE_OF_INTEGER_PROMOTION( \
- BOOST_PP_IF( \
- BOOST_PP_LESS(TYPE_RANK(L), TYPE_RANK(R)), \
- R, L \
- ) \
- ) \
- /**/
- # define TYPE_OF_UNARY_OP(O, T) \
- BOOST_PP_IF( \
- OP_IS_LOGICAL(O), \
- TYPE_INT, TYPE_OF_INTEGER_PROMOTION(T) \
- ) \
- /**/
- # define TYPE_OF_BINARY_OP(O, L, R) \
- BOOST_PP_IF( \
- OP_IS_LOGICAL(O), TYPE_INT, \
- BOOST_PP_IF( \
- OP_IS_SHIFT(O), \
- TYPE_OF_INTEGER_PROMOTION(L), \
- TYPE_OF_USUAL_ARITHMETIC_CONVERSION(L,R) \
- ) \
- ) \
- /**/
- # define IS_VALID_UNARY_OP_AND_TYPE_COMBINATION(O, T) \
- BOOST_PP_IF( \
- TYPE_IS_FLOATING(T), \
- OP_IS_FLOATING(O), 1 \
- ) \
- /**/
- # define IS_VALID_BINARY_OP_AND_TYPE_COMBINATION(O, L, R) \
- BOOST_PP_IF( \
- BOOST_PP_OR(TYPE_IS_FLOATING(L), TYPE_IS_FLOATING(R)), \
- OP_IS_FLOATING(O), 1 \
- ) \
- /**/
- #
- # /* Generates code for all unary operators and integral types. */
- # define UNARY_ARRAY_OP(_, OT) \
- BOOST_PP_IF( \
- IS_VALID_UNARY_OP_AND_TYPE_COMBINATION OT, \
- UNARY_ARRAY_OP_CODE, BOOST_PP_TUPLE_EAT(2) \
- ) OT \
- /**/
- # define UNARY_ARRAY_OP_CODE(O, T) \
- void BOOST_PP_LIST_CAT(BOOST_PP_TUPLE_TO_LIST(4, (array_, OP_NAME(O), _, TYPE_ABBREVIATION(T)))) \
- (const TYPE_NAME(T)* in, TYPE_NAME(TYPE_OF_UNARY_OP(O, T))* out, unsigned n) { \
- do { \
- *out++ = OP_SYMBOL(O) *in++; \
- } while (--n); \
- } \
- /**/
- BOOST_PP_LIST_FOR_EACH_PRODUCT(UNARY_ARRAY_OP, 2, (APPLICATIVE_UNARY_OPS, BUILTIN_TYPES))
- # /* Generates code for all binary operators and integral type pairs. */
- # define BINARY_ARRAY_OP(_, OLR) \
- BOOST_PP_IF( \
- IS_VALID_BINARY_OP_AND_TYPE_COMBINATION OLR, \
- BINARY_ARRAY_OP_CODE, BOOST_PP_TUPLE_EAT(3) \
- ) OLR \
- /**/
- # define BINARY_ARRAY_OP_CODE(O, L, R) \
- void BOOST_PP_LIST_CAT( \
- BOOST_PP_TUPLE_TO_LIST( \
- 6, (array_, OP_NAME(O), _, TYPE_ABBREVIATION(L), _, TYPE_ABBREVIATION(R)) \
- ) \
- )(const TYPE_NAME(L)* lhs_in, const TYPE_NAME(R)* rhs_in, TYPE_NAME(TYPE_OF_BINARY_OP(O, L, R))* out, unsigned n) { \
- do { \
- *out++ = *lhs_in OP_SYMBOL(O) *rhs_in; \
- ++lhs_in; \
- ++rhs_in; \
- } while (--n); \
- } \
- /**/
- BOOST_PP_LIST_FOR_EACH_PRODUCT(BINARY_ARRAY_OP, 3, (APPLICATIVE_BINARY_OPS, BUILTIN_TYPES, BUILTIN_TYPES))
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