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| author | Szabolcs Nagy <nsz@port70.net> | 2018-09-22 18:47:27 +0000 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2018-10-15 14:42:46 -0400 |
| commit | 7396ef0a05b834bf92c4f268a3336c0bc10c3593 (patch) | |
| tree | 185691544913e852ac64c13ba8d0a9f7cfe9530f /src/math/j0.c | |
| parent | 7c5f3bb955123ba65bbdedee0e4499ef78a5747c (diff) | |
| download | musl-7396ef0a05b834bf92c4f268a3336c0bc10c3593.tar.gz | |
arm: add single instruction fma
vfma is available in the vfpv4 fpu and above, the ACLE standard feature
test for double precision hardware fma support is
__ARM_FEATURE_FMA && __ARM_FP&8
we need further checks to work around clang bugs (fixed in clang >=7.0)
&& !__SOFTFP__
because __ARM_FP is defined even with -mfloat-abi=soft
&& !BROKEN_VFP_ASM
to disable the single precision code when inline asm handling is broken.
For runtime selection the HWCAP_ARM_VFPv4 hwcap flag can be used, but
that requires further work.
Diffstat (limited to 'src/math/j0.c')
0 files changed, 0 insertions, 0 deletions