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The C Users' Group Library 1994 August
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wc-cdrom-cusersgrouplibrary-1994-08.iso
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vol_300
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315_01
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fft.h
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C/C++ Source or Header
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1990-05-16
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423b
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19 lines
#ifndef FFT_H
#define FFT_H
#define PI 3.14159265358979
#define FORWARD -1
#define INVERSE 1
/* the filter option defines a filter from 1.0 to MINVAL. All */
/* amplitudes below MINVAL are set to 0.0 */
#define MINVAL 0.00001
void fft(), xy_to_polar(), polar_to_xy();
void unscramble_transform(), minmax(), data_multiply();
double *get_filter();
int dbl_scale(), int_scale(), long_scale();
#endif