diff options
Diffstat (limited to 'common/pffft.h')
| -rw-r--r-- | common/pffft.h | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/common/pffft.h b/common/pffft.h index 3b402ca4..4bc3ebb6 100644 --- a/common/pffft.h +++ b/common/pffft.h @@ -152,8 +152,8 @@ void pffft_transform_ordered(PFFFT_Setup *setup, const float *input, float *outp void pffft_zreorder(PFFFT_Setup *setup, const float *input, float *output, pffft_direction_t direction); /** - * Perform a multiplication of the z-domain data in dft_a and dft_b and - * accumulate them into dft_ab. The arrays should have been obtained with + * Perform a multiplication of the z-domain data in dft_a and dft_b, and scale + * and accumulate into dft_ab. The arrays should have been obtained with * pffft_transform(..., PFFFT_FORWARD) or pffft_zreorder(..., PFFFT_BACKWARD) * and should *not* be in the usual order (otherwise just perform the operation * yourself as the dft coeffs are stored as interleaved complex numbers). @@ -162,7 +162,17 @@ void pffft_zreorder(PFFFT_Setup *setup, const float *input, float *output, pffft * * The dft_a, dft_b, and dft_ab parameters may alias. */ -void pffft_zconvolve_accumulate(PFFFT_Setup *setup, const float *dft_a, const float *dft_b, float *dft_ab, float scaling); +void pffft_zconvolve_scale_accumulate(PFFFT_Setup *setup, const float *dft_a, const float *dft_b, float *dft_ab, float scaling); + +/** + * Perform a multiplication of the z-domain data in dft_a and dft_b, and + * accumulate into dft_ab. + * + * The operation performed is: dft_ab += dft_a * dft_b + * + * The dft_a, dft_b, and dft_ab parameters may alias. + */ +void pffft_zconvolve_accumulate(PFFFT_Setup *setup, const float *dft_a, const float *dft_b, float *dft_ab); /** * The float buffers must have the correct alignment (16-byte boundary on intel |