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On development genome skim tools

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This commit is contained in:
Eric Coissac
2024-08-30 11:17:33 +02:00
parent cd330db672
commit 373464cb06
10 changed files with 144 additions and 50 deletions
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2
pkg/obifp/uint128.go
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@ -145,7 +145,7 @@ func (u Uint128) Mul(v Uint128) Uint128 {
p2, p3 := bits.Mul64(u.w0, v.w1)
hi, c0 := bits.Add64(hi, p1, 0)
hi, c1 := bits.Add64(hi, p3, c0)
if (u.w1 != 0 && v.w1 != 0) || p0 != 0 || p2 != 0 || c1 != 0 {
if p0 != 0 || p2 != 0 || c1 != 0 {
log.Panicf("Uint128 overflow at Mul(%v, %v)", u, v)
}
return Uint128{w1: hi, w0: lo}

10
pkg/obifp/uint64.go
View File

@ -94,11 +94,14 @@ func (u Uint64) LeftShift64(n uint, carryIn uint64) (value, carry uint64) {
case n == 64:
return carryIn, u.w0
case n < 128:
return carryIn, u.w0 << (n - 64)
}
log.Warnf("Uint64 overflow at LeftShift64(%v, %v)", u, n)
return 0, 0
}
// RightShift64 performs a right shift operation on the Uint64 value by n bits, with carry-out to carry.
@ -117,10 +120,13 @@ func (u Uint64) RightShift64(n uint, carryIn uint64) (value, carry uint64) {
return u.w0, 0
case n < 64:
return u.w0>>n | (carryIn & ^((1 << (64 - n)) - 1)), u.w0 << (n - 64)
return u.w0>>n | (carryIn & ^((1 << (64 - n)) - 1)), u.w0 << (64 - n)
case n == 64:
return carryIn, u.w0
case n < 128:
return carryIn, u.w0 >> (n - 64)
}
log.Warnf("Uint64 overflow at RightShift64(%v, %v)", u, n)