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| author | Pierre Roux | 2019-04-04 00:14:47 +0200 |
|---|---|---|
| committer | Pierre Roux | 2019-11-01 10:21:03 +0100 |
| commit | dca0135a263717b3a1a1d7c4f054f039dc08109e (patch) | |
| tree | 3f2ab5ea79e084a9c72e1376d5399ad4a62cb771 /test-suite/primitive | |
| parent | 3e0db1b645a8653c62b8b5a4978e6d8fbbe9a9cc (diff) | |
Make primitive float work on x86_32
Flag -fexcess-precision=standard is not enough on x86_32
where -msse2 -mfpmath=sse is required (-msse is not enough)
to avoid double rounding issues in the VM.
Most floating-point operation are now implemented in C because OCaml
is suffering double rounding issues on x86_32 with 80 bits extended
precision registers used for floating-point values, causing double
rounding making floating-point arithmetic incorrect with respect to
its specification.
Add a runtime test for double roundings.
Diffstat (limited to 'test-suite/primitive')
| -rw-r--r-- | test-suite/primitive/float/frexp.v | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/test-suite/primitive/float/frexp.v b/test-suite/primitive/float/frexp.v index 2a600429b1..f13d5cebf6 100644 --- a/test-suite/primitive/float/frexp.v +++ b/test-suite/primitive/float/frexp.v @@ -1,3 +1,5 @@ +(* TODO add tests for ldexp (particularly with overflow with 31 and 63 bits integers) *) + Require Import ZArith Floats. Definition denorm := Eval compute in ldexp one (-1074)%Z. |