ossp-pkg/act/act.h.in
1.5
/*
** Act - Abstract Container Type Library
** Copyright (c) 1999-2002 Ralf S. Engelschall <rse@engelschall.com>
**
** This file is part of Act, a library for dealing with Abstract
** Container Types which can be found at http://www.ossp.org/pkg/act/.
**
** Permission to use, copy, modify, and distribute this software for
** any purpose with or without fee is hereby granted, provided that
** the above copyright notice and this permission notice appear in all
** copies.
**
** THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 AUTHORS AND COPYRIGHT HOLDERS AND THEIR
** 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.
**
** act.h: public Application Programming Interface (API)
*/
#ifndef _ACT_H_
#define _ACT_H_
/* the library version */
#ifndef ACT_VERSION
#define ACT_VERSION @ACT_VERSION_HEX@
#endif
/* essential headers */
#include <sys/types.h> /* for ssize_t, off_t */
/* essential typedefs */
@HAVE_ACT_UINT8_T@
@HAVE_ACT_UINT16_T@
@HAVE_ACT_UINT32_T@
@HAVE_ACT_UINT64_T@
@HAVE_ACT_SIZE_T@
typedef @ACT_UINT8_T@ act_uint8_t;
typedef @ACT_UINT16_T@ act_uint16_t;
typedef @ACT_UINT32_T@ act_uint32_t;
typedef @ACT_UINT64_T@ act_uint64_t;
typedef @ACT_SIZE_T@ act_size_t;
/* C++ support */
#ifdef __cplusplus
#define BEGIN_DECLARATION extern "C" {
#define END_DECLARATION }
#else
#define BEGIN_DECLARATION /*nop*/
#define END_DECLARATION /*nop*/
#endif
/* true and false boolean values */
#ifndef FALSE
#define FALSE 0
#endif
#ifndef TRUE
/* Do not depend on the exact TRUE value, i.e. never do: x == TRUE.
Use TRUE only for return or assignment. */
#define TRUE !FALSE
#endif
/* null values for pointers and characters */
#ifndef NULL
#define NULL ((void *)0)
#endif
#ifndef NUL
#define NUL '\0'
#endif
/*
* Internal Bitmask Calculation Macros
* (Notice: bit positions are counted n...0, i.e. lowest bit is position 0)
*/
/* generate a bitmask consisting of 1 bits from (and including)
bit position `l' (left) to (and including) bit position `r' */
#define _BM_MASK(l,r) (((1<<((l)-(r)+1))-1)<<(r))
/* extract a value v from a word w at position `l' to `r' and return value */
#define _BM_GET(w,l,r) (((w)>>(r))&_BM_MASK((l)-(r),0))
/* insert a value v into a word w at position `l' to `r' and return word */
#define _BM_SET(w,l,r,v) ((w)|(((v)&_BM_MASK((l)-(r),0))<<(r)))
/* generate a single bit `b' (0 or 1) at bit position `n' */
#define _BM_BIT(n,b) ((b)<<(n))
/* generate a quad word octet of bits (a half byte, i.e. bit positions 3 to 0) */
#define _BM_QUAD(b3,b2,b1,b0) (_BM_BIT(3,(b3))|_BM_BIT(2,(b2))|_BM_BIT(1,(b1))|_BM_BIT(0,(b0)))
/* generate an octet word of bits (a byte, i.e. bit positions 7 to 0) */
#define _BM_OCTET(b7,b6,b5,b4,b3,b2,b1,b0) ((_BM_QUAD(b7,b6,b5,b4)<<4)|_BM_QUAD(b3,b2,b1,b0))
/* generate the value 2^n */
#define _BM_POW2(n) _BM_BIT(1,n)
/* shift word w k bits to the left or to the right */
#define _BM_SHL(w,k) ((w)<<(k))
#define _BM_SHR(w,k) ((w)>>(k))
/* rotate word w (of bits n..0) k bits to the left or to the right */
#define _BM_ROL(w,n,k) (_BM_SHL((w),(k))&_BM_MASK(n,0))|_BM_SHR(((w)&_BM_MASK(n,0)),(n)-(k))
#define _BM_ROR(w,n,k) (_BM_SHR(((w)&_BM_MASK(n,0)),(k)))|_BM_SHL(((w),(n)-(k))&_BM_MASK(n,0))
/*
* Some math functions
*/
#ifndef _M_MIN
#define _M_MIN(a,b) (((a)<(b)) ? (a) : (b))
#endif
#ifndef _M_MAX
#define _M_MAX(a,b) (((a)>(b)) ? (a) : (b))
#endif
#ifndef _M_ABS
#define _M_ABS(a) (((a)>0) ? (a) : -(a))
#endif
#ifndef _M_ALIGN
#define _M_ALIGN(a) (((unsigned long int)(a)+(sizeof((void *)-1)))&(~(sizeof((void *)-1))))
#endif
/*
* A hacker macro for finding the offset of a `field'
* in a structure of type `type'.
*/
#define _OffsetOf(type,s_field) \
((unsigned int)(((char *)(&(((type *)0)->field)))-((char *)0)))
/*
* ACT data types
*/
enum act_type_en {
act_type_ptr,
act_type_int,
act_type_long,
act_type_double
};
typedef enum act_type_en act_type_t;
/*
* ???
*/
/* additional errno values */
#define ACT_E_NOMEM 0
#define ACT_E_INVAL 0
#define ACT_E_INTERN 0
/* positions */
#define ACT_POS_ABOVE 0
#define ACT_POS_BELOW 0
#define ACT_POS_BEFORE 0
#define ACT_POS_AFTER 0
/* walking */
#define ACT_MOV_PARENT 0
#define ACT_MOV_CHILD(n) 0
#define ACT_MOV_PREV 0
#define ACT_MOV_NEXT 0
/* boolean type */
typedef unsigned short int act_bool_t;
#define ACT_CTX_KEY_SIZE ACT_CTX_ID(int,COMMON,0)
#define ACT_CTX_KEY_LOAN ACT_CTX_ID(int,COMMON,1)
#define ACT_CTX_KEY_ISPTR ACT_CTX_ID(int,COMMON,2)
#define ACT_CTX_VAL_SIZE ACT_CTX_ID(int,COMMON,3)
#define ACT_CTX_VAL_LOAN ACT_CTX_ID(int,COMMON,4)
#define ACT_CTX_VAL_ISPTR ACT_CTX_ID(int,COMMON,5)
#define ACT_CTX_VAL_EXPECT ACT_CTX_ID(int,COMMON,6)
#include "act_lib.h"
#include "act_ctx.h"
#endif /* _ACT_H_ */
