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math.big: optimize divide_array_by_digit() (#24566)

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Mike 2025-05-25 13:06:27 +03:00 • committed by GitHub
parent 22c327fee5
commit f19e8a7fa3
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1 changed files with 5 additions and 6 deletions
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11
vlib/math/big/array_ops.v
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@ -228,19 +228,18 @@ fn divide_array_by_digit(operand_a []u32, divisor u32, mut quotient []u32, mut r
}
// Dividend has more digits
mut rem := u64(0)
mut qtemp := []u32{len: quotient.cap}
divisor64 := u64(divisor)
// Pad quotient to contain sufficient space
for _ in 0 .. operand_a.len {
quotient << 0
}
// Perform division step by step
for index := operand_a.len - 1; index >= 0; index-- {
dividend := (rem << 32) + operand_a[index]
quotient[index] = u32(dividend / divisor64)
qtemp[index] = u32(dividend / divisor64)
rem = dividend % divisor64
}
// Remove leading zeros from quotient
shrink_tail_zeros(mut quotient)
shrink_tail_zeros(mut qtemp)
quotient << qtemp
remainder << u32(rem)
shrink_tail_zeros(mut remainder)
}