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math.big: rework function naming and documentation (#18890)

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phoebe
2023-07-20 01:33:07 +02:00
committed by GitHub
parent bd3501affa
commit a49b8f28b1
10 changed files with 178 additions and 116 deletions
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14
vlib/math/big/division_array_ops.v
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@ -34,9 +34,9 @@ fn binary_divide_array_by_array(operand_a []u32, operand_b []u32, mut quotient [
// align
if lead_zer_remainder < lead_zer_divisor {
lshift_in_place(mut divisor, lead_zer_divisor - lead_zer_remainder)
left_shift_in_place(mut divisor, lead_zer_divisor - lead_zer_remainder)
} else if lead_zer_remainder > lead_zer_divisor {
lshift_in_place(mut remainder, lead_zer_remainder - lead_zer_divisor)
left_shift_in_place(mut remainder, lead_zer_remainder - lead_zer_divisor)
}
$if debug {
@ -47,13 +47,13 @@ fn binary_divide_array_by_array(operand_a []u32, operand_b []u32, mut quotient [
bit_set(mut quotient, bit_idx)
subtract_align_last_byte_in_place(mut remainder, divisor)
}
rshift_in_place(mut divisor, 1)
right_shift_in_place(mut divisor, 1)
}
// adjust
if lead_zer_remainder > lead_zer_divisor {
// rshift_in_place(mut quotient, lead_zer_remainder - lead_zer_divisor)
rshift_in_place(mut remainder, lead_zer_remainder - lead_zer_divisor)
// right_shift_in_place(mut quotient, lead_zer_remainder - lead_zer_divisor)
right_shift_in_place(mut remainder, lead_zer_remainder - lead_zer_divisor)
}
shrink_tail_zeros(mut remainder)
shrink_tail_zeros(mut quotient)
@ -115,7 +115,7 @@ fn subtract_align_last_byte_in_place(mut a []u32, b []u32) {
// there is no overflow. We know that the last bits are zero
// and that n <= 32
[direct_array_access; inline]
fn lshift_in_place(mut a []u32, n u32) {
fn left_shift_in_place(mut a []u32, n u32) {
mut carry := u32(0)
mut prec_carry := u32(0)
mask := ((u32(1) << n) - 1) << (32 - n)
@ -130,7 +130,7 @@ fn lshift_in_place(mut a []u32, n u32) {
// logical right shift without control because these digits have already been
// shift left before
[direct_array_access; inline]
fn rshift_in_place(mut a []u32, n u32) {
fn right_shift_in_place(mut a []u32, n u32) {
mut carry := u32(0)
mut prec_carry := u32(0)
mask := u32((1 << n) - 1)