Summary of Figaro FFT routines

• bfft: Takes the reverse `fft' of complex data.
• cmplx2i: Extracts the imaginary part of a complex data structure.
• cmplx2m: Extracts the modulus of a complex data structure.
• cmplx2r: Extracts the real part of a complex data structure.
• cmplxadd, cmplxdiv, cmplxmult, cmplxsub: Perform arithmetic operations on two complex data structures giving a third. Cf. `iadd' etc.
• cmplxconj: Produces the complex conjugate of a complex data structure.
• cmplxfilt: Creates a mid-pass filter for complex data.
• cosbell: Creates data that goes to zero at the edges in a cosine bell.
• fft: Takes the forward FFT of complex data.
• i2cmplx: Copies a data array into the imaginary part of a complex data structure.
• peak: Determines position of highest peak in a spectrum.
• r2cmplx: Creates a complex data structure from a real data array.
• rotx: Rotates a data array along the X axis an integer # of pixels.