122 lines
3.0 KiB
C
122 lines
3.0 KiB
C
/*
|
|
This file defines sane integer types for our target platforms. This
|
|
library only runs on machines with the following characteristics:
|
|
|
|
- supports integer word sizes of 8, 16, 32, and 64 bits
|
|
- uses unsigned and signed 2's complement representations
|
|
- all pointer types are the same size
|
|
- there is an integer type with the same size as a pointer
|
|
|
|
Some features require:
|
|
- IEEE 754 single- and double-precision floating point
|
|
|
|
We assume the LP64 convention for 64-bit platforms.
|
|
*/
|
|
|
|
#if defined(__gnu_linux__)
|
|
#define LINUX
|
|
#elif defined(__APPLE__) && defined(__MACH__)
|
|
#define MACOSX
|
|
#elif defined(__OpenBSD__)
|
|
#define OPENBSD
|
|
#elif defined(__FreeBSD__)
|
|
#define FREEBSD
|
|
#elif defined(_WIN32)
|
|
#define WIN32
|
|
#else
|
|
#error "unknown platform"
|
|
#endif
|
|
|
|
#if defined(OPENBSD) || defined(FREEBSD)
|
|
#if defined(__x86_64__)
|
|
#define __SIZEOF_POINTER__ 8
|
|
#else
|
|
#define __SIZEOF_POINTER__ 4
|
|
#endif
|
|
#endif
|
|
|
|
#if !defined(BITS32) && !defined(BITS64)
|
|
#ifndef __SIZEOF_POINTER__
|
|
#error "__SIZEOF_POINTER__ undefined"
|
|
#endif
|
|
#if (8 == __SIZEOF_POINTER__)
|
|
#define BITS64
|
|
#elif (4 == __SIZEOF_POINTER__)
|
|
#define BITS32
|
|
#else
|
|
#error "this is one weird machine"
|
|
#endif
|
|
#endif
|
|
|
|
#if defined(WIN32)
|
|
#define STDCALL __stdcall
|
|
#if defined(IMPORT_EXPORTS)
|
|
#define DLLEXPORT __declspec(dllimport)
|
|
#else
|
|
#define DLLEXPORT __declspec(dllexport)
|
|
#endif
|
|
#else
|
|
#define STDCALL
|
|
#define DLLEXPORT __attribute__((visibility("default")))
|
|
#endif
|
|
|
|
#define LLT_ALLOC(n) malloc(n)
|
|
#define LLT_REALLOC(p, n) realloc((p), (n))
|
|
#define LLT_FREE(x) free(x)
|
|
|
|
typedef int bool_t;
|
|
|
|
#ifdef BITS64
|
|
#define TOP_BIT 0x8000000000000000
|
|
#define NBITS 64
|
|
#else
|
|
#define TOP_BIT 0x80000000
|
|
#define NBITS 32
|
|
#endif
|
|
|
|
#define LLT_ALIGN(x, sz) (((x) + (sz - 1)) & (-sz))
|
|
|
|
// branch prediction annotations
|
|
#ifdef __GNUC__
|
|
#define __unlikely(x) __builtin_expect(!!(x), 0)
|
|
#define __likely(x) __builtin_expect(!!(x), 1)
|
|
#else
|
|
#define __unlikely(x) (x)
|
|
#define __likely(x) (x)
|
|
#endif
|
|
|
|
#define DBL_MAXINT 9007199254740992LL
|
|
#define FLT_MAXINT 16777216
|
|
#define U64_MAX 18446744073709551615ULL
|
|
#define S64_MAX 9223372036854775807LL
|
|
#define S64_MIN (-S64_MAX - 1LL)
|
|
#define BIT63 0x8000000000000000LL
|
|
#define U32_MAX 4294967295L
|
|
#define S32_MAX 2147483647L
|
|
#define S32_MIN (-S32_MAX - 1L)
|
|
#define BIT31 0x80000000
|
|
|
|
#define DBL_EPSILON 2.2204460492503131e-16
|
|
#define FLT_EPSILON 1.192092896e-7
|
|
#define DBL_MAX 1.7976931348623157e+308
|
|
#define DBL_MIN 2.2250738585072014e-308
|
|
#define FLT_MAX 3.402823466e+38
|
|
#define FLT_MIN 1.175494351e-38
|
|
#define LOG2_10 3.3219280948873626
|
|
#define rel_zero(a, b) (fabs((a) / (b)) < DBL_EPSILON)
|
|
#define sign_bit(r) ((*(int64_t *)&(r)) & BIT63)
|
|
#define LABS(n) (((n) ^ ((n) >> (NBITS - 1))) - ((n) >> (NBITS - 1)))
|
|
#define NBABS(n, nb) (((n) ^ ((n) >> ((nb)-1))) - ((n) >> ((nb)-1)))
|
|
#define DFINITE(d) \
|
|
(((*(int64_t *)&(d)) & 0x7ff0000000000000LL) != 0x7ff0000000000000LL)
|
|
#define DNAN(d) ((d) != (d))
|
|
|
|
extern double D_PNAN;
|
|
extern double D_NNAN;
|
|
extern double D_PINF;
|
|
extern double D_NINF;
|
|
extern float F_PNAN;
|
|
extern float F_NNAN;
|
|
extern float F_PINF;
|
|
extern float F_NINF;
|