hanez/fun
1
0
Fork 0
forked from fun/fun
Code Pull requests Activity

Some more stdlib refactoring removing duplicate code. (0.38.9)

Browse source
This commit is contained in:
Johannes Findeisen 2026-02-09 01:02:49 +01:00
commit 794a2354d6
11 changed files with 18 additions and 112 deletions
Download patch file Download diff file Expand all files Collapse all files

25
lib/crypt/crc32c.fun
View file

@ -49,44 +49,23 @@ class CRC32C()
return band(this.u32(a), this.u32(b))
// hex helpers (mirroring style from lib/crypt/md5.fun)
fun byte_from_hex_pair(this, hh)
hi = hex_val(substr(hh, 0, 1))
lo = hex_val(substr(hh, 1, 1))
return hi * 16 + lo
fun from_hex(this, hex)
arr = []
i = 0
n = len(hex)
while i + 1 < n
b = this.byte_from_hex_pair(substr(hex, i, 2))
b = byte_from_hex_pair(substr(hex, i, 2))
push(arr, b)
i = i + 2
return arr
fun two_hex(this, n)
n = n % 256
d = ["0","1","2","3","4","5","6","7","8","9","a","b","c","d","e","f"]
hi = n / 16
lo = n % 16
parts = [d[hi], d[lo]]
return join(parts, "")
fun bytes_to_hex(this, arr)
i = 0
out = []
while i < len(arr)
push(out, this.two_hex(arr[i]))
i = i + 1
return join(out, "")
fun u32_to_hex8(this, n)
// big-endian printing (MSB first), common for CRC displays
b3 = this.and32(this.shr32(n, 24), 255)
b2 = this.and32(this.shr32(n, 16), 255)
b1 = this.and32(this.shr32(n, 8), 255)
b0 = this.and32(n, 255)
return this.bytes_to_hex([b3, b2, b1, b0])
return bytes_to_hex([b3, b2, b1, b0])
// Bitwise update (no table needed) using reflected polynomial 0x82F63B78
POLY = 2197175160 // 0x82F63B78