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@ -534,7 +534,7 @@ struct signalfd_siginfo |
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#define ECB_H |
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/* 16 bits major, 16 bits minor */ |
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#define ECB_VERSION 0x00010004 |
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#define ECB_VERSION 0x00010005 |
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#ifdef _WIN32 |
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typedef signed char int8_t; |
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@ -561,7 +561,7 @@ struct signalfd_siginfo |
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#endif |
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#else |
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#include <inttypes.h> |
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#if UINTMAX_MAX > 0xffffffffU |
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#if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU |
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#define ECB_PTRSIZE 8 |
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#else |
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#define ECB_PTRSIZE 4 |
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@ -649,6 +649,10 @@ struct signalfd_siginfo |
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#include <builtins.h> |
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#endif |
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#if 1400 <= _MSC_VER |
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#include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */ |
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#endif |
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#ifndef ECB_MEMORY_FENCE |
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#if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 |
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#if __i386 || __i386__ |
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@ -661,11 +665,19 @@ struct signalfd_siginfo |
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#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
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#elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ |
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#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") |
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#elif defined __ARM_ARCH_2__ \ |
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|| defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \ |
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|| defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \ |
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|| defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \ |
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|| defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \ |
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|| defined __ARM_ARCH_5TEJ__ |
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/* should not need any, unless running old code on newer cpu - arm doesn't support that */ |
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#elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ |
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|| defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ |
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|| defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \ |
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|| defined __ARM_ARCH_6T2__ |
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#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") |
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#elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ |
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|| defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ |
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|| defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__ |
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#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") |
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#elif __aarch64__ |
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#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory") |
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@ -917,6 +929,11 @@ typedef int ecb_bool; |
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ecb_function_ ecb_const int |
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ecb_ctz32 (uint32_t x) |
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{ |
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#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM) |
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unsigned long r; |
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_BitScanForward (&r, x); |
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return (int)r; |
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#else |
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int r = 0; |
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x &= ~x + 1; /* this isolates the lowest bit */ |
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@ -936,14 +953,21 @@ typedef int ecb_bool; |
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#endif |
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return r; |
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#endif |
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} |
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ecb_function_ ecb_const int ecb_ctz64 (uint64_t x); |
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ecb_function_ ecb_const int |
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ecb_ctz64 (uint64_t x) |
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{ |
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int shift = x & 0xffffffffU ? 0 : 32; |
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#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM) |
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unsigned long r; |
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_BitScanForward64 (&r, x); |
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return (int)r; |
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#else |
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int shift = x & 0xffffffff ? 0 : 32; |
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return ecb_ctz32 (x >> shift) + shift; |
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#endif |
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} |
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ecb_function_ ecb_const int ecb_popcount32 (uint32_t x); |
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@ -961,6 +985,11 @@ typedef int ecb_bool; |
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ecb_function_ ecb_const int ecb_ld32 (uint32_t x); |
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ecb_function_ ecb_const int ecb_ld32 (uint32_t x) |
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{ |
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#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM) |
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unsigned long r; |
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_BitScanReverse (&r, x); |
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return (int)r; |
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#else |
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int r = 0; |
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if (x >> 16) { x >>= 16; r += 16; } |
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@ -970,16 +999,23 @@ typedef int ecb_bool; |
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if (x >> 1) { r += 1; } |
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return r; |
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#endif |
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} |
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ecb_function_ ecb_const int ecb_ld64 (uint64_t x); |
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ecb_function_ ecb_const int ecb_ld64 (uint64_t x) |
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{ |
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#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM) |
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unsigned long r; |
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_BitScanReverse64 (&r, x); |
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return (int)r; |
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#else |
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int r = 0; |
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if (x >> 32) { x >>= 32; r += 32; } |
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return r + ecb_ld32 (x); |
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#endif |
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} |
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#endif |
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@ -1092,8 +1128,8 @@ ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { retu |
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/* try to tell the compiler that some condition is definitely true */ |
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#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 |
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ecb_inline ecb_const unsigned char ecb_byteorder_helper (void); |
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ecb_inline ecb_const unsigned char |
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ecb_inline ecb_const uint32_t ecb_byteorder_helper (void); |
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ecb_inline ecb_const uint32_t |
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ecb_byteorder_helper (void) |
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{ |
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/* the union code still generates code under pressure in gcc, */ |
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@ -1102,26 +1138,28 @@ ecb_byteorder_helper (void) |
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/* the reason why we have this horrible preprocessor mess */ |
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/* is to avoid it in all cases, at least on common architectures */ |
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/* or when using a recent enough gcc version (>= 4.6) */ |
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#if ((__i386 || __i386__) && !__VOS__) || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64 |
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return 0x44; |
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#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ |
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return 0x44; |
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#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ |
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return 0x11; |
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#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \ |
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|| ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__) |
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#define ECB_LITTLE_ENDIAN 1 |
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return 0x44332211; |
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#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \ |
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|| ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__) |
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#define ECB_BIG_ENDIAN 1 |
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return 0x11223344; |
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#else |
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union |
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{ |
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uint32_t i; |
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uint8_t c; |
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} u = { 0x11223344 }; |
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return u.c; |
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uint8_t c[4]; |
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uint32_t u; |
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} u = { 0x11, 0x22, 0x33, 0x44 }; |
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return u.u; |
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#endif |
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} |
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ecb_inline ecb_const ecb_bool ecb_big_endian (void); |
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ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } |
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ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; } |
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ecb_inline ecb_const ecb_bool ecb_little_endian (void); |
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ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } |
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ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; } |
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#if ECB_GCC_VERSION(3,0) || ECB_C99 |
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#define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) |
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@ -1156,6 +1194,102 @@ ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_he |
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#define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) |
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#endif |
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ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x); |
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ecb_function_ ecb_const uint32_t |
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ecb_binary16_to_binary32 (uint32_t x) |
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{ |
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unsigned int s = (x & 0x8000) << (31 - 15); |
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int e = (x >> 10) & 0x001f; |
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unsigned int m = x & 0x03ff; |
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if (ecb_expect_false (e == 31)) |
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/* infinity or NaN */ |
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e = 255 - (127 - 15); |
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else if (ecb_expect_false (!e)) |
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{ |
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if (ecb_expect_true (!m)) |
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/* zero, handled by code below by forcing e to 0 */ |
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e = 0 - (127 - 15); |
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else |
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{ |
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/* subnormal, renormalise */ |
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unsigned int s = 10 - ecb_ld32 (m); |
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m = (m << s) & 0x3ff; /* mask implicit bit */ |
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e -= s - 1; |
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} |
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} |
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/* e and m now are normalised, or zero, (or inf or nan) */ |
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e += 127 - 15; |
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return s | (e << 23) | (m << (23 - 10)); |
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} |
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ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x); |
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ecb_function_ ecb_const uint16_t |
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ecb_binary32_to_binary16 (uint32_t x) |
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{ |
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unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */ |
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unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */ |
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unsigned int m = x & 0x007fffff; |
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x &= 0x7fffffff; |
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/* if it's within range of binary16 normals, use fast path */ |
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if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff)) |
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{ |
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/* mantissa round-to-even */ |
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m += 0x00000fff + ((m >> (23 - 10)) & 1); |
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/* handle overflow */ |
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if (ecb_expect_false (m >= 0x00800000)) |
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{ |
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m >>= 1; |
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e += 1; |
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} |
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return s | (e << 10) | (m >> (23 - 10)); |
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} |
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/* handle large numbers and infinity */ |
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if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000)) |
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return s | 0x7c00; |
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/* handle zero, subnormals and small numbers */ |
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if (ecb_expect_true (x < 0x38800000)) |
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{ |
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/* zero */ |
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if (ecb_expect_true (!x)) |
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return s; |
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/* handle subnormals */ |
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/* too small, will be zero */ |
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if (e < (14 - 24)) /* might not be sharp, but is good enough */ |
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return s; |
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m |= 0x00800000; /* make implicit bit explicit */ |
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/* very tricky - we need to round to the nearest e (+10) bit value */ |
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{ |
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unsigned int bits = 14 - e; |
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unsigned int half = (1 << (bits - 1)) - 1; |
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unsigned int even = (m >> bits) & 1; |
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/* if this overflows, we will end up with a normalised number */ |
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m = (m + half + even) >> bits; |
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} |
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return s | m; |
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} |
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/* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */ |
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m >>= 13; |
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return s | 0x7c00 | m | !m; |
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} |
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/*******************************************************************************/ |
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/* floating point stuff, can be disabled by defining ECB_NO_LIBM */ |
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@ -1207,23 +1341,6 @@ ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_he |
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#define ecb_frexpf(x,e) (float) frexp ((double) (x), (e)) |
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#endif |
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/* converts an ieee half/binary16 to a float */ |
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ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x); |
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ecb_function_ ecb_const float |
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ecb_binary16_to_float (uint16_t x) |
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{ |
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int e = (x >> 10) & 0x1f; |
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int m = x & 0x3ff; |
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float r; |
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if (!e ) r = ecb_ldexpf (m , -24); |
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else if (e != 31) r = ecb_ldexpf (m + 0x400, e - 25); |
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else if (m ) r = ECB_NAN; |
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else r = ECB_INFINITY; |
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return x & 0x8000 ? -r : r; |
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} |
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/* convert a float to ieee single/binary32 */ |
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ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x); |
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ecb_function_ ecb_const uint32_t |
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@ -1364,6 +1481,22 @@ ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_he |
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return r; |
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} |
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/* convert a float to ieee half/binary16 */ |
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ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x); |
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ecb_function_ ecb_const uint16_t |
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ecb_float_to_binary16 (float x) |
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{ |
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return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x)); |
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} |
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/* convert an ieee half/binary16 to float */ |
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ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x); |
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ecb_function_ ecb_const float |
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ecb_binary16_to_float (uint16_t x) |
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{ |
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return ecb_binary32_to_float (ecb_binary16_to_binary32 (x)); |
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} |
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#endif |
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#endif |
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