diff options
| -rw-r--r-- | src/utils/endians.nim | 39 |
1 files changed, 0 insertions, 39 deletions
diff --git a/src/utils/endians.nim b/src/utils/endians.nim deleted file mode 100644 index e716ba8b..00000000 --- a/src/utils/endians.nim +++ /dev/null @@ -1,39 +0,0 @@ -when defined(gcc) or defined(llvm_gcc) or defined(clang): - const useBuiltinSwap = true - proc builtin_bswap32(a: uint32): uint32 {. - importc: "__builtin_bswap32", nodecl, noSideEffect.} -elif defined(icc): - const useBuiltinSwap = true - proc builtin_bswap32(a: uint32): uint32 {. - importc: "_bswap", nodecl, noSideEffect.} -elif defined(vcc): - const useBuiltinSwap = true - proc builtin_bswap32(a: uint32): uint32 {. - importc: "_byteswap_ulong", nodecl, header: "<intrin.h>", noSideEffect.} -else: - const useBuiltinSwap = false - -when useBuiltinSwap: - proc swap(u: uint32): uint32 {.inline.} = - return builtin_bswap32(u) -else: - proc swap(u: uint32): uint32 {.inline.} = - return ((u and 0xFF000000) shr 24) or - ((u and 0x00FF0000) shr 8) or - ((u and 0x0000FF00) shl 8) or - (u shl 24) - -proc fromBytesBEu32*(x: openArray[uint8]): uint32 {.inline.} = - var u {.noinit.}: uint32 - copyMem(addr u, unsafeAddr x[0], sizeof(uint32)) - when system.cpuEndian == littleEndian: - return swap(u) - else: - return u - -proc toBytesBE*(u: uint32): array[sizeof(uint32), uint8] {.inline.} = - when system.cpuEndian == littleEndian: - var u = swap(u) - copyMem(addr result[0], addr u, sizeof(uint32)) - else: - copyMem(addr result[0], unsafeAddr u, sizeof(uint32)) |