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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. |