diff options
| -rw-r--r-- | libgcc/config/libbid/bid_binarydecimal.c | 51 |
1 files changed, 4 insertions, 47 deletions
diff --git a/libgcc/config/libbid/bid_binarydecimal.c b/libgcc/config/libbid/bid_binarydecimal.c index e156ea6..5413acc 100644 --- a/libgcc/config/libbid/bid_binarydecimal.c +++ b/libgcc/config/libbid/bid_binarydecimal.c @@ -26,65 +26,22 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see // Counting leading zeros in an unsigned 32-bit word // The "_nz" version will return the wrong answer (31) for zero inputs -#define CLZ32_MASK16 0xFFFF0000ul -#define CLZ32_MASK8 0xFF00FF00ul -#define CLZ32_MASK4 0xF0F0F0F0ul -#define CLZ32_MASK2 0xCCCCCCCCul -#define CLZ32_MASK1 0xAAAAAAAAul - -#define clz32_nz(n) \ - (((((n) & CLZ32_MASK16) <= ((n) & ~CLZ32_MASK16)) ? 16 : 0) + \ - ((((n) & CLZ32_MASK8) <= ((n) & ~CLZ32_MASK8)) ? 8 : 0) + \ - ((((n) & CLZ32_MASK4) <= ((n) & ~CLZ32_MASK4)) ? 4 : 0) + \ - ((((n) & CLZ32_MASK2) <= ((n) & ~CLZ32_MASK2)) ? 2 : 0) + \ - ((((n) & CLZ32_MASK1) <= ((n) & ~CLZ32_MASK1)) ? 1 : 0)) - +#define clz32_nz(n) (__builtin_clz (n)) #define clz32(n) (((n)==0) ? 32 : clz32_nz(n)) // Counting trailing zeros in an unsigned 32-bit word -// The ctz32_1bit version is for a single bit - -#define ctz32_1bit(n) \ - ((((n) & ~CLZ32_MASK16) ? 0 : 16) + \ - (((n) & ~CLZ32_MASK8) ? 0 : 8) + \ - (((n) & ~CLZ32_MASK4) ? 0 : 4) + \ - (((n) & ~CLZ32_MASK2) ? 0 : 2) + \ - (((n) & ~CLZ32_MASK1) ? 0 : 1)) +#define ctz32(n) (__builtin_ctz (n)) -#define ctz32(n) (((n) == 0) ? 32 : ctz32_1bit((n) & -(n))) // Counting leading zeros in an unsigned 64-bit word // The "_nz" version will return the wrong answer (63) for zero inputs -#define CLZ64_MASK32 0xFFFFFFFF00000000ull -#define CLZ64_MASK16 0xFFFF0000FFFF0000ull -#define CLZ64_MASK8 0xFF00FF00FF00FF00ull -#define CLZ64_MASK4 0xF0F0F0F0F0F0F0F0ull -#define CLZ64_MASK2 0xCCCCCCCCCCCCCCCCull -#define CLZ64_MASK1 0xAAAAAAAAAAAAAAAAull - -#define clz64_nz(n) \ - (((((n) & CLZ64_MASK32) <= ((n) & ~CLZ64_MASK32)) ? 32 : 0) + \ - ((((n) & CLZ64_MASK16) <= ((n) & ~CLZ64_MASK16)) ? 16 : 0) + \ - ((((n) & CLZ64_MASK8) <= ((n) & ~CLZ64_MASK8)) ? 8 : 0) + \ - ((((n) & CLZ64_MASK4) <= ((n) & ~CLZ64_MASK4)) ? 4 : 0) + \ - ((((n) & CLZ64_MASK2) <= ((n) & ~CLZ64_MASK2)) ? 2 : 0) + \ - ((((n) & CLZ64_MASK1) <= ((n) & ~CLZ64_MASK1)) ? 1 : 0)) \ - +#define clz64_nz(n) ( (__SIZEOF_LONG__ == 8) ?__builtin_clzl(n) : __builtin_clzll(n) ) #define clz64(n) (((n)==0) ? 64 : clz64_nz(n)) // Counting trailing zeros in an unsigned 64-bit word -// The ctz64_1bit version is for a single bit - -#define ctz64_1bit(n) \ - ((((n) & ~CLZ64_MASK32) ? 0 : 32) + \ - (((n) & ~CLZ64_MASK16) ? 0 : 16) + \ - (((n) & ~CLZ64_MASK8) ? 0 : 8) + \ - (((n) & ~CLZ64_MASK4) ? 0 : 4) + \ - (((n) & ~CLZ64_MASK2) ? 0 : 2) + \ - (((n) & ~CLZ64_MASK1) ? 0 : 1)) +#define ctz64(n) ( (__SIZEOF_LONG__ == 8) ?__builtin_ctzl(n) : __builtin_ctzll(n) ) -#define ctz64(n) (((n) == 0) ? 64 : ctz64_1bit((n) & -(n))) // Counting leading zeros in an unsigned 2-part 128-bit word |