Side Effects

Because a and b are used internally for auxiliary storage, they may be destroyed after the convolution calculation is complete. If the contents of a and b must be used after the convolution, they should first be copied to temporary arrays.

S3L_conv is most efficient when all arrays have the same length and when this length can be computed efficiently via S3L_fft, or S3L_rc_fft. See "S3L_fft " and "S3L_rc_fft and S3L_cr_fft " for additional information.