New FFT initialization functions to make it easier for the linker
to optimize the code size when the library is used as a static
library and can't be rebuilt.
Compilation directives for code size optimizations have been removed.
Table configuration issue with RFFT Fast F32 and F16
The define use to include or exclude the bit reverse table is different
for scalar and MVE versions. The test was not covering both cases.
Compilation symbols have been introduced to allow to include only the
FFT tables which are useful in a given application.
The README.md in DSP is giving more details.
- new version V1.5.5
- reworked DSP library source files
added macro ARM_MATH_LOOPUNROLL
removed macro UNALIGNED_SUPPORT_DISABLE
relpaced arm_bitreversal2.S with C version
added const-correctness
replaced SIMD pointer construct with memcpy solution
- reworked DSP library documentation
- moved DSP libraries to folder ./DSP/Lib
- ARM DSP Libraries are built with ARMCLANG
- Added DSP Libraries Source variant
The rationale here is that if the caller knows the size FFT they require
at compile time, only the look-up tables required for that size are
placed in the data segment (ROM). This saves between ~40k to ~80k of
ROM when only using a single FFT size.
Christophe Favergeon
Jonatan Antoni
GuentherMartin
Dave Flogeras