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| author | Karl Palsson <karlp@remake.is> | 2015-10-15 15:28:54 +0300 |
|---|---|---|
| committer | Karl Palsson <karlp@remake.is> | 2015-10-15 15:28:54 +0300 |
| commit | caeeed2b0f3e231a8667deb57f0d75f5f63d0ec3 (patch) | |
| tree | bd66ee013767c9500f23044198bc1d7f70460475 /README.md | |
| parent | 5ece67ad5dbe7ad9b5c378d41d77e2337caffe07 (diff) | |
stm32f7: FPU only single precision on f7 :(
Boo ST.
Diffstat (limited to 'README.md')
| -rw-r--r-- | README.md | 5 |
1 files changed, 3 insertions, 2 deletions
@@ -99,8 +99,9 @@ them as environment variables, for example: behavior can be specified by setting `FP_FLAGS`. Currently, M4F cores default to `-mfloat-abi=hard -mfpu=fpv4-sp-d16`, - M7 core defaults to double precision `-mfloat-abi=hard -mfpu=fpv5-d16` - and other architectures to no FP flags forcing to use software computation. + M7 cores defaults to double precision `-mfloat-abi=hard -mfpu=fpv5-d16` if available, + and single precision `-mfloat-abi=hard -mfpu=fpv5-sp-d16` otherwise. + Other architectures use no FP flags, in otherwords, traditional softfp. You may find which FP_FLAGS you can use in particular architecture in readme.txt shipped with gcc-arm-embedded package. |