diff options
| author | Xavier Leroy <xavier.leroy@college-de-france.fr> | 2019-07-12 11:42:25 +0200 |
|---|---|---|
| committer | Xavier Leroy <xavierleroy@users.noreply.github.com> | 2019-07-17 09:16:00 +0200 |
| commit | 8b0de52ffa302298abe8d0d6e3b6ed339a2354ba (patch) | |
| tree | fcfdb40451908865ba706e184ff434a847b7711b /riscV | |
| parent | dc5dc1da4cfa10647d13f393b6685f962b9b9faa (diff) | |
| download | compcert-8b0de52ffa302298abe8d0d6e3b6ed339a2354ba.tar.gz compcert-8b0de52ffa302298abe8d0d6e3b6ed339a2354ba.zip | |
Add floating-point square root and fused multiply-add
We just lift the corresponding functions from Flocq and add
the computation of NaN payloads.
NaN payloads for FMA are described in the ARM and RISC-V specifications,
and were determined experimentally for x86 and for Power.
Diffstat (limited to 'riscV')
| -rw-r--r-- | riscV/Archi.v | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/riscV/Archi.v b/riscV/Archi.v index e4078132..61d129d0 100644 --- a/riscV/Archi.v +++ b/riscV/Archi.v @@ -57,11 +57,16 @@ Lemma choose_nan_32_idem: forall n, choose_nan_32 (n :: n :: nil) = choose_nan_32 (n :: nil). Proof. auto. Qed. +Definition fma_order {A: Type} (x y z: A) := (x, y, z). + +Definition fma_invalid_mul_is_nan := false. + Definition float_of_single_preserves_sNaN := false. Global Opaque ptr64 big_endian splitlong default_nan_64 choose_nan_64 default_nan_32 choose_nan_32 + fma_order fma_invalid_mul_is_nan float_of_single_preserves_sNaN. (** Whether to generate position-independent code or not *) |