integer_ops.h

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#ifndef INTEGER_OPS_H
#define INTEGER_OPS_H
/***************************************************************************
 *   Copyright (C) 2004, 2006 Symbian Software Ltd.                        *
 *   All rights reserved.                                                  *
 *   Copyright (C) 2007-2011 Mike Kinghan, imk@strudl.org                  *
 *   All rights reserved.                                                  *
 *                                                                         *
 *   Contributed originally by Mike Kinghan, imk@strudl.org                *
 *                                                                         *
 *   Redistribution and use in source and binary forms, with or without    *
 *   modification, are permitted provided that the following conditions    *
 *   are met:                                                              *
 *                                                                         *
 *   Redistributions of source code must retain the above copyright        *
 *   notice, this list of conditions and the following disclaimer.         *
 *                                                                         *
 *   Redistributions in binary form must reproduce the above copyright     *
 *   notice, this list of conditions and the following disclaimer in the   *
 *   documentation and/or other materials provided with the distribution.  *
 *                                                                         *
 *   Neither the name of Symbian Software Ltd. nor the names of its        *
 *   contributors may be used to endorse or promote products derived from  *
 *   this software without specific prior written permission.              *
 *                                                                         *
 *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS   *
 *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT     *
 *   LIMITED TO, THE IMPLIED WARRANTIES OF  MERCHANTABILITY AND FITNESS    *
 *   FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE        *
 *   COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,   *
 *   INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,  *
 *   BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS *
 *   OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED    *
 *   AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,*
 *   OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF *
 *   THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH  *
 *   DAMAGE.                                                               *
 *                                                                         *
 **************************************************************************/



typedef enum {
    INT_UNDEF = 0,                                      
    INT_CHAR = (1 << 16) | (sizeof(char) << 8) | 1,     
    INT_UCHAR = (1 << 16) | sizeof(char) << 8,          
    INT_SHORT = (2 << 16) | (sizeof(short) << 8) | 1,    
    INT_USHORT = (2 << 16) | sizeof(short) << 8,       
    INT_INT = (3 << 16) | (sizeof(int) << 8) | 1,        
    INT_UINT = (3 << 16) | sizeof(int) << 8,           
    INT_LONG = (4 << 16) | (sizeof(long) << 8) | 1,      
    INT_ULONG = (4 << 16) | sizeof(long) << 8,         
    INT_LLONG = (5 << 16) | (sizeof(long long) << 8) | 1,     
    INT_ULLONG = (5 << 16) | sizeof(long long) << 8,        
    INT_TOO_BIG = 6 << 16,       
    INT_INSOLUBLE = INT_TOO_BIG 
} int_type;

#define RANK(int_type) ((int_type) >> 16)

#define SIZEOF(int_type) (((int_type) >> 8) & ~0xff00)

#define IS_SIGNED(int_type) ((int_type) & 1)

#define MAKE_SIGNED(int_type) ((int_type) | 1)

#define MAKE_UNSIGNED(int_type) ((int_type) & ~1)

typedef struct int_spec {
    union {
        long long ll;
        unsigned long long ull;
        long l;
        unsigned long ul;
        int i;
        unsigned ui;
    } val; 
    int_type type; 
} int_spec_t;

#define INT_UNION_INITOR {0LL}

#define INT_SPEC_INITOR {INT_UNION_INITOR,INT_UNDEF}

typedef int_spec_t (integer_bin_op_t)(int_spec_t const *, int_spec_t const *);

extern int_spec_t
lt(int_spec_t const * l, int_spec_t const *r);

extern int_spec_t
gt(int_spec_t const * l, int_spec_t const *r);

extern int_spec_t
le(int_spec_t const * l, int_spec_t const *r);

extern int_spec_t
ge(int_spec_t const * l, int_spec_t const *r);

extern int_spec_t
eq(int_spec_t const * l, int_spec_t const *r);

extern int_spec_t
ne(int_spec_t const * l, int_spec_t const *r);

extern int_spec_t
bit_and(int_spec_t const * l, int_spec_t const *r);

extern int_spec_t
bit_or(int_spec_t const * l, int_spec_t const *r);

extern int_spec_t
bit_xor(int_spec_t const * l, int_spec_t const *r);

extern int_spec_t
complement(int_spec_t const * int_spec);

extern int_spec_t
minus(int_spec_t const * int_spec);

extern int_spec_t
lshift(int_spec_t const * l, int_spec_t const *r);

extern int_spec_t
rshift(int_spec_t const * l, int_spec_t const *r);

extern int_spec_t
add(int_spec_t const * l, int_spec_t const *r);

extern int_spec_t
subtract(int_spec_t const * l, int_spec_t const *r);

extern int_spec_t
multiply(int_spec_t const * l, int_spec_t const *r);

extern int_spec_t
divide(int_spec_t const * l, int_spec_t const *r);

extern int_spec_t
modulus(int_spec_t const * l, int_spec_t const *r);

extern int_spec_t
boolean_and(int_spec_t const * l, int_spec_t const *r);


extern int_spec_t
boolean_or(int_spec_t const * l, int_spec_t const *r);


extern int_spec_t
negate(int_spec_t const * int_spec);

#endif /* EOF*/