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big: Add workaround for DLL globals bug.

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This commit is contained in:
Jeroen van Rijn
2021-08-14 13:51:17 +02:00
parent dc02566a84
commit 0db86a0638
6 changed files with 46 additions and 23 deletions
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core/math/big/common.odin
+16 -4
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@@ -27,10 +27,22 @@ import "core:intrinsics"
`initialize_constants` also replaces the other `_DEFAULT_*` cutoffs with custom compile-time values if so `#config`ured.
*/
MUL_KARATSUBA_CUTOFF := initialize_constants();
SQR_KARATSUBA_CUTOFF := _DEFAULT_SQR_KARATSUBA_CUTOFF;
MUL_TOOM_CUTOFF := _DEFAULT_MUL_TOOM_CUTOFF;
SQR_TOOM_CUTOFF := _DEFAULT_SQR_TOOM_CUTOFF;
/*
There is a bug with DLL globals. They don't get set.
To allow tests to run we add `-define:MATH_BIG_EXE=false` to hardcode the cutoffs for now.
*/
when #config(MATH_BIG_EXE, true) {
MUL_KARATSUBA_CUTOFF := initialize_constants();
SQR_KARATSUBA_CUTOFF := _DEFAULT_SQR_KARATSUBA_CUTOFF;
MUL_TOOM_CUTOFF := _DEFAULT_MUL_TOOM_CUTOFF;
SQR_TOOM_CUTOFF := _DEFAULT_SQR_TOOM_CUTOFF;
} else {
MUL_KARATSUBA_CUTOFF := _DEFAULT_MUL_KARATSUBA_CUTOFF;
SQR_KARATSUBA_CUTOFF := _DEFAULT_SQR_KARATSUBA_CUTOFF;
MUL_TOOM_CUTOFF := _DEFAULT_MUL_TOOM_CUTOFF;
SQR_TOOM_CUTOFF := _DEFAULT_SQR_TOOM_CUTOFF;
}
/*
These defaults were tuned on an AMD A8-6600K (64-bit) using libTomMath's `make tune`.