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ext/bcmath: optimized divmod() and mod() take 2 #18058

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ext/bcmath: optimized divmod() and mod() take 2 #18058

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03955d6
Added `bc_divide_copy_numerator()`
SakiTakamachi Mar 14, 2025
aaf1f6a
At the end of the calculation, set the value of `numerator_vectors` t…
SakiTakamachi Mar 14, 2025
b2c1b3f
Changed `bc_divide` to `bc_divide_ex`, and changed three division fun…
SakiTakamachi Mar 14, 2025
c0000cd
Set the sign of `quot` efficiently
SakiTakamachi Mar 14, 2025
0865562
Use `quot` only if `use_quot == true`, in `bc_divide_ex`
SakiTakamachi Mar 14, 2025
5e4b175
Added `bc_convert_vector_to_char()` and `bc_convert_vector_to_char_wi…
SakiTakamachi Mar 14, 2025
13a98ae
Use `quot` only if `use_quot == true`, in other funcs
SakiTakamachi Mar 14, 2025
b949c5e
Roughly write code using `use_rem`
SakiTakamachi Mar 14, 2025
484d9df
Using `rem` in `bc_divide_by_one`
SakiTakamachi Mar 14, 2025
2d63079
Create a process to initialize `bc_num` of `rem`
SakiTakamachi Mar 14, 2025
c7916b5
Using `rem` in `bc_divide_by_pow_10`
SakiTakamachi Mar 14, 2025
a2ba77c
Using `rem` in `bc_do_div`
SakiTakamachi Mar 14, 2025
d3a5713
fixed raisemod
SakiTakamachi Mar 14, 2025
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Added bc_divide_copy_numerator()
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@SakiTakamachi
SakiTakamachi committed May 23, 2025
commit 03955d6b9b786fccf1d7e9df5bac066bd7a856db
12 changes: 8 additions & 4 deletions ext/bcmath/libbcmath/src/div.c
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Original file line number Diff line number Diff line change
Expand Up @@ -300,12 +300,16 @@ static void bc_do_div(
}
}

static inline void bc_divide_copy_numerator(bc_num numerator, bc_num *num, size_t scale)
{
scale = MIN(numerator->n_scale, scale);
*num = bc_new_num_nonzeroed(numerator->n_len, scale);
memcpy((*num)->n_value, numerator->n_value, numerator->n_len + scale);
}

static inline void bc_divide_by_one(bc_num numerator, bc_num *quot, size_t quot_scale)
{
quot_scale = MIN(numerator->n_scale, quot_scale);
*quot = bc_new_num_nonzeroed(numerator->n_len, quot_scale);
char *qptr = (*quot)->n_value;
memcpy(qptr, numerator->n_value, numerator->n_len + quot_scale);
bc_divide_copy_numerator(numerator, quot, quot_scale);
}

static inline void bc_divide_by_pow_10(
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