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Mark Borgerding
2005-07-09 03:46:53 +00:00
parent 3b5dfee961
commit ceaa3900c0
1 changed files with 6 additions and 5 deletions
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@ -4,12 +4,12 @@
Added ability to do 4 FFTs in parallel by using SSE SIMD instructions. This is accomplished by
using the __m128 (vector of 4 floats) as kiss_fft_scalar. Define USE_SIMD to use this.
I know, I know ... this is drifting a bit from the "kiss" principle, but the speed advantages
make it worth it for some. Also recent gcc makes it SOO easy to use vectors of 4 floats as a POD type.
I know, I know ... this is drifting a bit from the "kiss" principle, but the speed advantages
make it worth it for some. Also recent gcc makes it SOO easy to use vectors of 4 floats like a POD type.
1.2.2 (May 6, 2005) The Matthew release
Replaced fixed point division with multiply&shift. Thanks to Jean-Marc Valin for
discussions regarding. Considerable speedup.
discussions regarding. Considerable speedup for fixed-point.
Corrected overflow protection in real fft routines when using fixed point.
Finder's Credit goes to Robert Oschler of robodance for pointing me at the bug.
@ -57,7 +57,7 @@
Add kfc.[ch]: the KISS FFT Cache. It takes care of allocs for you ( suggested by Oscar Lesta ).
1.0.1 (Dec 15, 2003)
fixed bug that occurred when nfft==1
fixed bug that occurred when nfft==1. Thanks to Steven Johnson.
1.0 : (Dec 14, 2003)
changed kiss_fft function from using a single buffer, to two buffers.
@ -68,7 +68,8 @@
0.4 :(Nov 4,2003) optimized for radix 2,3,4,5
0.3 :(Oct 28, 2003) woops, version 2 didn't actually factor out any radices other than 2
0.3 :(Oct 28, 2003) woops, version 2 didn't actually factor out any radices other than 2.
Thanks to Steven Johnson for finding this one.
0.2 :(Oct 27, 2003) added mixed radix, only radix 2,4 optimized versions