218 lines
5.4 KiB
C
218 lines
5.4 KiB
C
#ifndef __DTYPES_H_
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#define __DTYPES_H_
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/*
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This file defines sane integer types for our target platforms. This
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library only runs on machines with the following characteristics:
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- supports integer word sizes of 8, 16, 32, and 64 bits
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- uses unsigned and signed 2's complement representations
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- all pointer types are the same size
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- there is an integer type with the same size as a pointer
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Some features require:
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- IEEE 754 single- and double-precision floating point
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We assume the LP64 convention for 64-bit platforms.
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*/
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#if defined(__gnu_linux__)
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# define LINUX
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#elif defined(__APPLE__) && defined(__MACH__)
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# define MACOSX
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#elif defined(__OpenBSD__)
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# define OPENBSD
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#elif defined(__FreeBSD__)
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# define FREEBSD
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#elif defined(_WIN32)
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# define WIN32
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#else
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# error "unknown platform"
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#endif
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#if defined(OPENBSD) || defined(FREEBSD)
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#if defined(__x86_64__)
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# define __SIZEOF_POINTER__ 8
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#else
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# define __SIZEOF_POINTER__ 4
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#endif
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#endif
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#if !defined (BITS32) && !defined (BITS64)
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#ifndef __SIZEOF_POINTER__
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# error "__SIZEOF_POINTER__ undefined"
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#endif
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#if( 8 == __SIZEOF_POINTER__ )
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# define BITS64
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#elif( 4 == __SIZEOF_POINTER__ )
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# define BITS32
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#else
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# error "this is one weird machine"
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#endif
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#endif
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#if defined(WIN32)
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# define STDCALL __stdcall
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# if defined(IMPORT_EXPORTS)
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# define DLLEXPORT __declspec(dllimport)
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# else
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# define DLLEXPORT __declspec(dllexport)
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# endif
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#else
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# define STDCALL
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# define DLLEXPORT __attribute__ ((visibility("default")))
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#endif
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#if defined(LINUX)
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# include <features.h>
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# include <endian.h>
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# define LITTLE_ENDIAN __LITTLE_ENDIAN
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# define BIG_ENDIAN __BIG_ENDIAN
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# define PDP_ENDIAN __PDP_ENDIAN
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# define BYTE_ORDER __BYTE_ORDER
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#elif defined(MACOSX) || defined(OPENBSD) || defined(FREEBSD)
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# include <machine/endian.h>
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# define __LITTLE_ENDIAN LITTLE_ENDIAN
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# define __BIG_ENDIAN BIG_ENDIAN
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# define __PDP_ENDIAN PDP_ENDIAN
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# define __BYTE_ORDER BYTE_ORDER
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#elif defined(WIN32)
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# define __LITTLE_ENDIAN 1234
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# define __BIG_ENDIAN 4321
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# define __PDP_ENDIAN 3412
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# define __BYTE_ORDER __LITTLE_ENDIAN
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# define __FLOAT_WORD_ORDER __LITTLE_ENDIAN
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# define LITTLE_ENDIAN __LITTLE_ENDIAN
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# define BIG_ENDIAN __BIG_ENDIAN
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# define PDP_ENDIAN __PDP_ENDIAN
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# define BYTE_ORDER __BYTE_ORDER
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#else
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# error "unknown platform"
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#endif
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#ifdef BOEHM_GC
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// boehm GC allocator
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#include <gc.h>
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#define LLT_ALLOC(n) GC_MALLOC(n)
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#define LLT_REALLOC(p,n) GC_REALLOC((p),(n))
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#define LLT_FREE(x) ((void)(x))
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#else
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// standard allocator
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#define LLT_ALLOC(n) malloc(n)
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#define LLT_REALLOC(p,n) realloc((p),(n))
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#define LLT_FREE(x) free(x)
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#endif
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typedef int bool_t;
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#if defined(__INTEL_COMPILER) && defined(WIN32)
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# define STATIC_INLINE static
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# define INLINE
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# ifdef BITS64
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typedef unsigned long size_t;
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# else
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typedef unsigned int size_t;
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# endif
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#else
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# define STATIC_INLINE static inline
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# define INLINE inline
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#endif
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typedef unsigned char byte_t; /* 1 byte */
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#if defined(WIN32)
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typedef short int16_t;
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typedef int int32_t;
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typedef long long int64_t;
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typedef unsigned char u_int8_t;
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typedef unsigned short u_int16_t;
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typedef unsigned int u_int32_t;
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#ifdef BITS64
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typedef unsigned long u_int64_t;
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#else
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typedef unsigned long long u_int64_t;
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#endif
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#ifdef __INTEL_COMPILER
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typedef signed char int8_t;
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typedef short int16_t;
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typedef int int32_t;
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#endif
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#else
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#include <sys/types.h>
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#endif
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#ifdef BITS64
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#define TOP_BIT 0x8000000000000000
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#define NBITS 64
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typedef unsigned long uint_t; // preferred int type on platform
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typedef long int_t;
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typedef int64_t offset_t;
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typedef u_int64_t index_t;
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typedef int64_t ptrint_t; // pointer-size int
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typedef u_int64_t u_ptrint_t;
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#else
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#define TOP_BIT 0x80000000
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#define NBITS 32
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typedef unsigned long uint_t;
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typedef long int_t;
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typedef int32_t offset_t;
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typedef u_int32_t index_t;
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typedef int32_t ptrint_t;
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typedef u_int32_t u_ptrint_t;
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#endif
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typedef u_int8_t uint8_t;
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typedef u_int16_t uint16_t;
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typedef u_int32_t uint32_t;
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typedef u_int64_t uint64_t;
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typedef u_ptrint_t uptrint_t;
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#define LLT_ALIGN(x, sz) (((x) + (sz-1)) & (-sz))
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// branch prediction annotations
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#ifdef __GNUC__
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#define __unlikely(x) __builtin_expect(!!(x), 0)
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#define __likely(x) __builtin_expect(!!(x), 1)
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#else
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#define __unlikely(x) (x)
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#define __likely(x) (x)
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#endif
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#define DBL_MAXINT 9007199254740992LL
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#define FLT_MAXINT 16777216
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#define U64_MAX 18446744073709551615ULL
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#define S64_MAX 9223372036854775807LL
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#define S64_MIN (-S64_MAX - 1LL)
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#define BIT63 0x8000000000000000LL
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#define U32_MAX 4294967295L
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#define S32_MAX 2147483647L
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#define S32_MIN (-S32_MAX - 1L)
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#define BIT31 0x80000000
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#define DBL_EPSILON 2.2204460492503131e-16
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#define FLT_EPSILON 1.192092896e-7
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#define DBL_MAX 1.7976931348623157e+308
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#define DBL_MIN 2.2250738585072014e-308
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#define FLT_MAX 3.402823466e+38
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#define FLT_MIN 1.175494351e-38
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#define LOG2_10 3.3219280948873626
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#define rel_zero(a, b) (fabs((a)/(b)) < DBL_EPSILON)
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#define sign_bit(r) ((*(int64_t*)&(r)) & BIT63)
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#define LABS(n) (((n)^((n)>>(NBITS-1))) - ((n)>>(NBITS-1)))
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#define NBABS(n,nb) (((n)^((n)>>((nb)-1))) - ((n)>>((nb)-1)))
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#define DFINITE(d) (((*(int64_t*)&(d))&0x7ff0000000000000LL)!=0x7ff0000000000000LL)
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#define DNAN(d) ((d)!=(d))
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extern double D_PNAN;
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extern double D_NNAN;
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extern double D_PINF;
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extern double D_NINF;
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extern float F_PNAN;
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extern float F_NNAN;
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extern float F_PINF;
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extern float F_NINF;
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#endif
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