8000 dtoa.c: Use an on-stack buffer for small bigints by jhawthorn · Pull Request #13234 · ruby/ruby · GitHub
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dtoa.c: Use an on-stack buffer for small bigints #13234

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dtoa.c: Use an on-stack buffer for small bigints #13234

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afa1eff
Eagerly initialize dtoa instead of using atomics
jhawthorn Apr 12, 2025
0371827
Extract MAXWDS
jhawthorn Apr 12, 2025
0ead738
More sensible Bcopy
jhawthorn Apr 12, 2025
123a89d
Remove maxwds
jhawthorn Apr 18, 2025
0b71a7e
Shrink fields of Bigint
jhawthorn Apr 18, 2025
ad889ce
Pass DTOA state through everything
jhawthorn Apr 18, 2025
aacb3d2
Pack struct better
jhawthorn Apr 18, 2025
ed38b29
On stack buffer for bigint allocations
jhawthorn Apr 18, 2025
41eebea
Cleanup hack
jhawthorn Apr 18, 2025
e02cfa0
Use int for wds again
jhawthorn Apr 18, 2025
a0af6c2
Update deps
jhawthorn May 1, 2025
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Use int for wds again 
Truth is, I don't know how large this is
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@jhawthorn
jhawthorn committed Apr 18, 2025
commit e02cfa061ca3cc3fa92e5c2e6034f9f8dfc394bc
5 changes: 2 additions & 3 deletions missing/dtoa.c
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Original file line number Diff line number Diff line change
Expand Up @@ -501,10 +501,9 @@ extern double rnd_prod(double, double), rnd_quot(double, double);
#define Kmax 15

struct Bigint {
unsigned short wds;
int wds;
unsigned char k;
unsigned int sign : 1;
unsigned int stackbuf_pos : 4;
int sign : 1;
ULong x[1];
};

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