Link to original procedure for hexValue().

2021-02-18 16:27:00 +02:00 · 2021-02-18 16:27:00 +02:00 · 4e9a857b90
parent 1d49ae7a47
commit 4e9a857b90
1 changed files with 2 additions and 0 deletions
--- a/chronos/streams/chunkstream.nim
+++ b/chronos/streams/chunkstream.nim
@ -37,6 +37,8 @@ proc LT(x, y: uint32): uint32 {.inline.} =
  (z xor ((y xor x) and (y xor z))) shr 31

 proc hexValue(c: byte): int =
+  # This is nim adaptation of
+  # https://github.com/pornin/CTTK/blob/master/src/hex.c#L28-L52
  let x = uint32(c) - 0x30'u32
  let y = uint32(c) - 0x41'u32
  let z = uint32(c) - 0x61'u32