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more fallbacks

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Jacek Sieka 2024-08-08 18:07:16 +02:00
parent 8aadf13bb5
commit 5b38e791dc
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1 changed files with 14 additions and 8 deletions
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bncurve/arith.nim
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@ -11,7 +11,20 @@ import nimcrypto/[utils, sysrand]
export options
# TODO replace private stint operations with an integer primitive library
import stint/private/primitives/[addcarry_subborrow, extended_precision]
when sizeof(int) == 4:
import stint/private/primitives/compiletime_fallback
# TODO a future intops library should expose this on 32-bit platforms too!
func addC*(cOut: var Carry, sum: var uint64, a, b: uint64, cIn: Carry) {.inline.} =
addC_nim(cOut, sum, a, b, cIn)
func subB*(bOut: var Borrow, diff: var uint64, a, b: uint64, bIn: Borrow) {.inline.} =
subB_nim(bOuit, diff, a, b, bIn)
proc muladd2(hi, lo: var uint64, a, b, c1, c2: uint64) =
muladd2_nim(hi, lo, a, b, c1, c2)
else:
import stint/private/primitives/[addcarry_subborrow, extended_precision]
import stint/private/datatypes
type
@ -104,13 +117,6 @@ proc subNoBorrow(a: var BNU256, b: BNU256) {.inline.} =
staticFor i, 0, 4:
subB(borrow, a[i], a[i], b[i], borrow)
when sizeof(int) == 4:
import stint/private/primitives/compiletime_fallback
# TODO a future intops library should expose this on 32-bit platforms too!
proc muladd2(hi, lo: var uint64, a, b, c1, c2: uint64) =
muladd2_nim(hi, lo, a, b, c1, c2)
proc macDigit[N, N2: static int](
acc: var array[N, uint64], pos: static int, b: array[N2, uint64], c: uint64) =
if c == 0'u64: