mirror/kissfft
1
0
Fork 0
mirror of https://github.com/mborgerding/kissfft.git synced 2025-05-27 21:20:27 -04:00
Code Issues Packages Projects Releases Wiki Activity

*** empty log message ***

Browse Source
This commit is contained in:
Mark Borgerding 2005-07-09 03:46:53 +00:00
parent 3b5dfee961
commit ceaa3900c0
1 changed files with 6 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
CHANGELOG
View File

@ -4,12 +4,12 @@
Added ability to do 4 FFTs in parallel by using SSE SIMD instructions. This is accomplished by 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. 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 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. 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 1.2.2 (May 6, 2005) The Matthew release
Replaced fixed point division with multiply&shift. Thanks to Jean-Marc Valin for 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. 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. 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 ). Add kfc.[ch]: the KISS FFT Cache. It takes care of allocs for you ( suggested by Oscar Lesta ).
1.0.1 (Dec 15, 2003) 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) 1.0 : (Dec 14, 2003)
changed kiss_fft function from using a single buffer, to two buffers. 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 0.4 :(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 0.2 :(Oct 27, 2003) added mixed radix, only radix 2,4 optimized versions