|
|
|
@ -507,7 +507,7 @@ struct signalfd_siginfo |
|
|
|
|
#define ECB_H |
|
|
|
|
|
|
|
|
|
/* 16 bits major, 16 bits minor */ |
|
|
|
|
#define ECB_VERSION 0x00010001 |
|
|
|
|
#define ECB_VERSION 0x00010002 |
|
|
|
|
|
|
|
|
|
#ifdef _WIN32 |
|
|
|
|
typedef signed char int8_t; |
|
|
|
@ -532,7 +532,6 @@ struct signalfd_siginfo |
|
|
|
|
typedef uint32_t uintptr_t; |
|
|
|
|
typedef int32_t intptr_t; |
|
|
|
|
#endif |
|
|
|
|
typedef intptr_t ptrdiff_t; |
|
|
|
|
#else |
|
|
|
|
#include <inttypes.h> |
|
|
|
|
#if UINTMAX_MAX > 0xffffffffU |
|
|
|
@ -563,6 +562,16 @@ struct signalfd_siginfo |
|
|
|
|
#define ECB_CPP (__cplusplus+0) |
|
|
|
|
#define ECB_CPP11 (__cplusplus >= 201103L) |
|
|
|
|
|
|
|
|
|
#if ECB_CPP |
|
|
|
|
#define ECB_EXTERN_C extern "C" |
|
|
|
|
#define ECB_EXTERN_C_BEG ECB_EXTERN_C { |
|
|
|
|
#define ECB_EXTERN_C_END } |
|
|
|
|
#else |
|
|
|
|
#define ECB_EXTERN_C extern |
|
|
|
|
#define ECB_EXTERN_C_BEG |
|
|
|
|
#define ECB_EXTERN_C_END |
|
|
|
|
#endif |
|
|
|
|
|
|
|
|
|
/*****************************************************************************/ |
|
|
|
|
|
|
|
|
|
/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ |
|
|
|
@ -617,9 +626,16 @@ struct signalfd_siginfo |
|
|
|
|
#if ECB_GCC_VERSION(4,7) |
|
|
|
|
/* see comment below (stdatomic.h) about the C11 memory model. */ |
|
|
|
|
#define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) |
|
|
|
|
#elif defined __clang && __has_feature (cxx_atomic) |
|
|
|
|
/* see comment below (stdatomic.h) about the C11 memory model. */ |
|
|
|
|
#define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) |
|
|
|
|
|
|
|
|
|
/* The __has_feature syntax from clang is so misdesigned that we cannot use it
|
|
|
|
|
* without risking compile time errors with other compilers. We *could* |
|
|
|
|
* define our own ecb_clang_has_feature, but I just can't be bothered to work |
|
|
|
|
* around this shit time and again. |
|
|
|
|
* #elif defined __clang && __has_feature (cxx_atomic) |
|
|
|
|
* // see comment below (stdatomic.h) about the C11 memory model.
|
|
|
|
|
* #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) |
|
|
|
|
*/ |
|
|
|
|
|
|
|
|
|
#elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ |
|
|
|
|
#define ECB_MEMORY_FENCE __sync_synchronize () |
|
|
|
|
#elif _MSC_VER >= 1400 /* VC++ 2005 */ |
|
|
|
@ -937,14 +953,32 @@ ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << ( |
|
|
|
|
#endif |
|
|
|
|
|
|
|
|
|
/* try to tell the compiler that some condition is definitely true */ |
|
|
|
|
#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) |
|
|
|
|
#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 |
|
|
|
|
|
|
|
|
|
ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; |
|
|
|
|
ecb_inline unsigned char |
|
|
|
|
ecb_byteorder_helper (void) |
|
|
|
|
{ |
|
|
|
|
const uint32_t u = 0x11223344; |
|
|
|
|
return *(unsigned char *)&u; |
|
|
|
|
/* the union code still generates code under pressure in gcc, */ |
|
|
|
|
/* but less than using pointers, and always seems to */ |
|
|
|
|
/* successfully return a constant. */ |
|
|
|
|
/* the reason why we have this horrible preprocessor mess */ |
|
|
|
|
/* is to avoid it in all cases, at least on common architectures */ |
|
|
|
|
/* or when using a recent enough gcc version (>= 4.6) */ |
|
|
|
|
#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64 |
|
|
|
|
return 0x44; |
|
|
|
|
#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ |
|
|
|
|
return 0x44; |
|
|
|
|
#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ |
|
|
|
|
return 0x11; |
|
|
|
|
#else |
|
|
|
|
union |
|
|
|
|
{ |
|
|
|
|
uint32_t i; |
|
|
|
|
uint8_t c; |
|
|
|
|
} u = { 0x11223344 }; |
|
|
|
|
return u.c; |
|
|
|
|
#endif |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
ecb_inline ecb_bool ecb_big_endian (void) ecb_const; |
|
|
|
@ -985,6 +1019,173 @@ ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == |
|
|
|
|
#define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) |
|
|
|
|
#endif |
|
|
|
|
|
|
|
|
|
/*******************************************************************************/ |
|
|
|
|
/* floating point stuff, can be disabled by defining ECB_NO_LIBM */ |
|
|
|
|
|
|
|
|
|
/* basically, everything uses "ieee pure-endian" floating point numbers */ |
|
|
|
|
/* the only noteworthy exception is ancient armle, which uses order 43218765 */ |
|
|
|
|
#if 0 \
|
|
|
|
|
|| __i386 || __i386__ \
|
|
|
|
|
|| __amd64 || __amd64__ || __x86_64 || __x86_64__ \
|
|
|
|
|
|| __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
|
|
|
|
|
|| defined __arm__ && defined __ARM_EABI__ \
|
|
|
|
|
|| defined __s390__ || defined __s390x__ \
|
|
|
|
|
|| defined __mips__ \
|
|
|
|
|
|| defined __alpha__ \
|
|
|
|
|
|| defined __hppa__ \
|
|
|
|
|
|| defined __ia64__ \
|
|
|
|
|
|| defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 |
|
|
|
|
#define ECB_STDFP 1 |
|
|
|
|
#include <string.h> /* for memcpy */ |
|
|
|
|
#else |
|
|
|
|
#define ECB_STDFP 0 |
|
|
|
|
#include <math.h> /* for frexp*, ldexp* */ |
|
|
|
|
#endif |
|
|
|
|
|
|
|
|
|
#ifndef ECB_NO_LIBM |
|
|
|
|
|
|
|
|
|
/* convert a float to ieee single/binary32 */ |
|
|
|
|
ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const; |
|
|
|
|
ecb_function_ uint32_t |
|
|
|
|
ecb_float_to_binary32 (float x) |
|
|
|
|
{ |
|
|
|
|
uint32_t r; |
|
|
|
|
|
|
|
|
|
#if ECB_STDFP |
|
|
|
|
memcpy (&r, &x, 4); |
|
|
|
|
#else |
|
|
|
|
/* slow emulation, works for anything but -0 */ |
|
|
|
|
uint32_t m; |
|
|
|
|
int e; |
|
|
|
|
|
|
|
|
|
if (x == 0e0f ) return 0x00000000U; |
|
|
|
|
if (x > +3.40282346638528860e+38f) return 0x7f800000U; |
|
|
|
|
if (x < -3.40282346638528860e+38f) return 0xff800000U; |
|
|
|
|
if (x != x ) return 0x7fbfffffU; |
|
|
|
|
|
|
|
|
|
m = frexpf (x, &e) * 0x1000000U; |
|
|
|
|
|
|
|
|
|
r = m & 0x80000000U; |
|
|
|
|
|
|
|
|
|
if (r) |
|
|
|
|
m = -m; |
|
|
|
|
|
|
|
|
|
if (e <= -126) |
|
|
|
|
{ |
|
|
|
|
m &= 0xffffffU; |
|
|
|
|
m >>= (-125 - e); |
|
|
|
|
e = -126; |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
r |= (e + 126) << 23; |
|
|
|
|
r |= m & 0x7fffffU; |
|
|
|
|
#endif |
|
|
|
|
|
|
|
|
|
return r; |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
/* converts an ieee single/binary32 to a float */ |
|
|
|
|
ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const; |
|
|
|
|
ecb_function_ float |
|
|
|
|
ecb_binary32_to_float (uint32_t x) |
|
|
|
|
{ |
|
|
|
|
float r; |
|
|
|
|
|
|
|
|
|
#if ECB_STDFP |
|
|
|
|
memcpy (&r, &x, 4); |
|
|
|
|
#else |
|
|
|
|
/* emulation, only works for normals and subnormals and +0 */ |
|
|
|
|
int neg = x >> 31; |
|
|
|
|
int e = (x >> 23) & 0xffU; |
|
|
|
|
|
|
|
|
|
x &= 0x7fffffU; |
|
|
|
|
|
|
|
|
|
if (e) |
|
|
|
|
x |= 0x800000U; |
|
|
|
|
else |
|
|
|
|
e = 1; |
|
|
|
|
|
|
|
|
|
/* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */ |
|
|
|
|
r = ldexpf (x * (0.5f / 0x800000U), e - 126); |
|
|
|
|
|
|
|
|
|
r = neg ? -r : r; |
|
|
|
|
#endif |
|
|
|
|
|
|
|
|
|
return r; |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
/* convert a double to ieee double/binary64 */ |
|
|
|
|
ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const; |
|
|
|
|
ecb_function_ uint64_t |
|
|
|
|
ecb_double_to_binary64 (double x) |
|
|
|
|
{ |
|
|
|
|
uint64_t r; |
|
|
|
|
|
|
|
|
|
#if ECB_STDFP |
|
|
|
|
memcpy (&r, &x, 8); |
|
|
|
|
#else |
|
|
|
|
/* slow emulation, works for anything but -0 */ |
|
|
|
|
uint64_t m; |
|
|
|
|
int e; |
|
|
|
|
|
|
|
|
|
if (x == 0e0 ) return 0x0000000000000000U; |
|
|
|
|
if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U; |
|
|
|
|
if (x < -1.79769313486231470e+308) return 0xfff0000000000000U; |
|
|
|
|
if (x != x ) return 0X7ff7ffffffffffffU; |
|
|
|
|
|
|
|
|
|
m = frexp (x, &e) * 0x20000000000000U; |
|
|
|
|
|
|
|
|
|
r = m & 0x8000000000000000;; |
|
|
|
|
|
|
|
|
|
if (r) |
|
|
|
|
m = -m; |
|
|
|
|
|
|
|
|
|
if (e <= -1022) |
|
|
|
|
{ |
|
|
|
|
m &= 0x1fffffffffffffU; |
|
|
|
|
m >>= (-1021 - e); |
|
|
|
|
e = -1022; |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
r |= ((uint64_t)(e + 1022)) << 52; |
|
|
|
|
r |= m & 0xfffffffffffffU; |
|
|
|
|
#endif |
|
|
|
|
|
|
|
|
|
return r; |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
/* converts an ieee double/binary64 to a double */ |
|
|
|
|
ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const; |
|
|
|
|
ecb_function_ double |
|
|
|
|
ecb_binary64_to_double (uint64_t x) |
|
|
|
|
{ |
|
|
|
|
double r; |
|
|
|
|
|
|
|
|
|
#if ECB_STDFP |
|
|
|
|
memcpy (&r, &x, 8); |
|
|
|
|
#else |
|
|
|
|
/* emulation, only works for normals and subnormals and +0 */ |
|
|
|
|
int neg = x >> 63; |
|
|
|
|
int e = (x >> 52) & 0x7ffU; |
|
|
|
|
|
|
|
|
|
x &= 0xfffffffffffffU; |
|
|
|
|
|
|
|
|
|
if (e) |
|
|
|
|
x |= 0x10000000000000U; |
|
|
|
|
else |
|
|
|
|
e = 1; |
|
|
|
|
|
|
|
|
|
/* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */ |
|
|
|
|
r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022); |
|
|
|
|
|
|
|
|
|
r = neg ? -r : r; |
|
|
|
|
#endif |
|
|
|
|
|
|
|
|
|
return r; |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
#endif |
|
|
|
|
|
|
|
|
|
#endif |
|
|
|
|
|
|
|
|
|
/* ECB.H END */ |
|
|
|
|