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added stride to fft input -- should simplify multi-dimensional FFTs

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Mark Borgerding
2003-12-29 18:50:13 +00:00
parent 604e238834
commit 4552a14801
8 changed files with 61 additions and 13 deletions
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5
tools/Makefile
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@ -34,9 +34,10 @@ endif
all: $(BENCHKISS) $(SELFTEST) $(BENCHFFTW) $(TESTREAL) $(FFTUTIL) $(TESTKFC)
#CFLAGS=-Wall -O3 -ansi -pedantic -march=pentiumpro -ffast-math -fomit-frame-pointer
CFLAGS=-Wall -O3 -pedantic -march=pentiumpro -ffast-math -fomit-frame-pointer
#-DUSE_SKIP
# If the above flags do not work, try the following
CFLAGS=-Wall -O3
#CFLAGS=-Wall -O3
$(FFTUTIL): ../kiss_fft.c fftutil.c kiss_fft2d.c kiss_fftr.c
$(CC) -o $@ $(CFLAGS) -I.. $(TYPEFLAGS) -lm $+

8
tools/fftutil.c
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@ -103,6 +103,14 @@ int main(int argc,char ** argv)
case 'r':nrows = atoi(optarg);break;
case 'i':isinverse=1;break;
case 'R':isreal=1;break;
case '?':
fprintf(stderr,"usage options:\n"
"\t-n NFFT: fft size\n"
"\t-r nrows: # rows (implies 2d FFT)\n"
"\t-i : inverse\n"
"\t-R : real input samples, not complex\n");
exit (1);
default:fprintf(stderr,"bad %c\n",c);break;
}
}