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#
#
# AsyncPG
# (c) Copyright 2016 Eugene Kabanov
#
# See the file "LICENSE", included in this
# distribution, for details about the copyright.
#
## This module implements functions for network byteorder
## conversation for different platforms.
## (Windows, MacOS, FreeBSD, OpenBSD, NetBSD, Linux, Solaris)
when cpuEndian == bigEndian:
template prepare*(x: int16): int16 = x
template prepare*(x: uint16): uint16 = x
template prepare*(x: int32): int32 = x
template prepare*(x: uint32): uint32 = x
template prepare*(x: int): int = x
template prepare*(x: uint): uint = x
template prepare*(x: float32): float32 = x
template prepare*(x: float64): float64 = x
template prepare*(x: float): float = x
template prepare*(x: bool): bool = x
template prepare*(x: int64): int64 = x
template prepare*(x: uint64): uint64 = x
else:
template prepareLong*(x: int64): int64 =
((cast[int64](x) shl 56) or
((cast[int64](x) shl 40) and 0xFF000000000000'i64) or
((cast[int64](x) shl 24) and 0xFF0000000000'i64) or
((cast[int64](x) shl 8) and 0xFF00000000'i64) or
((cast[int64](x) shr 8) and 0xFF000000'i64) or
((cast[int64](x) shr 24) and 0xFF0000'i64) or
((cast[int64](x) shr 40) and 0xFF00'i64) or
(cast[int64](x) shr 56))
template prepareLong*(x: uint64): uint64 =
cast[uint64](prepareLong(cast[int64](x)))
when defined(windows):
when defined(vcc):
proc prepare*(x: uint16): uint16
{.importc: "_byteswap_ushort", header: "<intrin.h>".}
template prepare*(x: int16): int16 =
cast[int16](prepare(x.uint16))
proc prepare*(x: uint32): uint32
{.importc: "_byteswap_ulong", header: "<intrin.h>".}
template prepare*(x: int32): int32 =
cast[int32](prepare(x.uint32))
when sizeof(int) == 8:
proc prepare*(x: uint64): uint64
{.importc: "_byteswap_uint64", header: "<intrin.h>".}
template prepare*(x: int64): int64 =
cast[int64](prepare(x.uint64))
else:
proc prepare*(x: uint64): uint64 =
result = prepareLong(x)
proc prepare*(x: int64): int64 =
result = prepareLong(x)
elif defined(gcc):
template prepare*(x: uint16): uint16 =
(x shr 8'u16) or (x shl 8'u16)
template prepare*(x: int16): int16 =
(cast[int16](prepare(x.uint16)))
proc prepare*(x: uint32): uint32
{.importc: "__bswapd", header: "<x86intrin.h>".}
template prepare*(x: int32): int32 =
(cast[int32](prepare(x.uint32)))
when sizeof(int) == 8:
proc prepare*(x: uint64): uint64
{.importc: "__bswapq", header: "<x86intrin.h>".}
template prepare*(x: int64): int64 =
(cast[int64](prepare(x.uint64)))
else:
proc prepare*(x: uint64): uint64 =
result = prepareLong(x)
proc prepare*(x: int64): int64 =
result = prepareLong(x)
elif defined(macosx):
template prepare*(x: uint16): uint16 =
(x shr 8'u16) or (x shl 8'u16)
template prepare*(x: int16): int16 =
(cast[int16](prepare(x.uint16)))
proc prepare*(x: uint32): uint32
{.importc: "__builtin_bswap32", header: "<sys/_endian.h>".}
template prepare*(x: int32): int32 =
(cast[int32](prepare(x.uint32)))
when sizeof(int) == 8:
proc prepare*(x: uint64): uint64
{.importc: "__builtin_bswap64", header: "<sys/_endian.h>".}
template prepare*(x: int64): int64 =
(cast[int64](prepare(x.uint64)))
else:
proc prepare*(x: uint64): uint64 =
result = prepareLong(x)
proc prepare*(x: int64): int64 =
result = prepareLong(x)
elif defined(linux):
proc prepare*(x: uint16): uint16
{.importc: "bswap_16", header: "<byteswap.h>".}
template prepare*(x: int16): int16 =
(cast[int16](prepare(x.uint16)))
proc prepare*(x: uint32): uint32
{.importc: "bswap_32", header: "<byteswap.h>".}
template prepare*(x: int32): int32 =
(cast[int32](prepare(x.uint32)))
when sizeof(int) == 8:
proc prepare*(x: uint64): uint64
{.importc: "bswap_64", header: "<byteswap.h>".}
template prepare*(x: int64): int64 =
(cast[int64](prepare(x.uint64)))
else:
proc prepare*(x: uint64): uint64 =
result = prepareLong(x)
proc prepare*(x: int64): int64 =
result = prepareLong(x)
elif defined(freebsd) or defined(netbsd):
proc prepare*(x: uint16): uint16
{.importc: "bswap16", header: "<sys/endian.h>".}
template prepare*(x: int16): int16 =
(cast[int16](prepare(x.uint16)))
proc prepare*(x: uint32): uint32
{.importc: "bswap32", header: "<sys/endian.h>".}
template prepare*(x: int32): int32 =
(cast[int32](prepare(x.uint32)))
when sizeof(int) == 8:
proc prepare*(x: uint64): uint64
{.importc: "bswap64", header: "<sys/endian.h>".}
template prepare*(x: int64): int64 =
(cast[int64](prepare(x.uint64)))
else:
proc prepare*(x: uint64): uint64 =
result = prepareLong(x)
proc prepare*(x: int64): int64 =
result = prepareLong(x)
elif defined(openbsd):
proc prepare*(x: uint16): uint16
{.importc: "__swap16", header: "<sys/_endian.h>".}
template prepare*(x: int16): int16 =
(cast[int16](prepare(x.uint16)))
proc prepare*(x: uint32): uint32
{.importc: "__swap32", header: "<sys/_endian.h>".}
template prepare*(x: int32): int32 =
(cast[int32](prepare(x.uint32)))
when sizeof(int) == 8:
proc prepare*(x: uint64): uint64
{.importc: "__swap64", header: "<sys/_endian.h>".}
template prepare*(x: int64): int64 =
(cast[int64](prepare(x.uint64)))
else:
proc prepare*(x: uint64): uint64 =
result = prepareLong(x)
proc prepare*(x: int64): int64 =
result = prepareLong(x)
elif defined(solaris):
proc prepare*(x: uint16): uint16
{.importc: "htons", header: "<asm/byteorder.h>".}
template prepare*(x: int16): int16 =
(cast[int16](prepare(x.uint16)))
proc prepare*(x: uint32): uint32
{.importc: "htonl", header: "<asm/byteorder.h>".}
template prepare*(x: int32): int32 =
(cast[int32](prepare(x.uint32)))
when sizeof(int) == 8:
proc prepare*(x: uint64): uint64
{.importc: "htonll", header: "<asm/byteorder.h>".}
template prepare*(x: int64): int64 =
(cast[int64](prepare(x.uint64)))
else:
proc prepare*(x: uint64): uint64 =
result = prepareLong(x)
proc prepare*(x: int64): int64 =
result = prepareLong(x)
when sizeof(int) == 8:
template prepare*(x: int): int =
(cast[int](prepare(x.uint64)))
template prepare*(x: uint): uint =
(cast[uint](prepare(x.uint64)))
elif sizeof(int) == 4:
template prepare*(x: int): int =
(cast[int](prepare(x.uint32)))
template prepare*(x: uint): uint =
(cast[uint](prepare(x.uint32)))
elif sizeof(int) == 2:
template prepare*(x: int): int =
(cast[int](prepare(x.uint16)))
template prepare*(x: uint): uint =
(cast[uint](prepare(x.uint32)))
template prepare*(x: float32): float32 =
(cast[float32](prepare(cast[int32](x))))
template prepare*(x: float64): float64 =
(cast[float64](prepare(cast[int64](x))))
template prepare*(x: float): float =
(cast[float](prepare(cast[int64](x))))
template prepare*(x: bool): bool = x