Thanks for the patch, Mauro. Just a correction below.
>
>+/* cos(x) = sin(x + pi radians) */
>+
This should pi / 2. Correcting for the same below.
>+#define fixp_cos32_rad(rad, twopi) \
>+ fixp_sin32_rad(rad + twopi/2, twopi)
fixp_sin32_rad(rad + twopi/4, twopi)
>+
I think this patch will serve the need. I will test it for vivid sir tone
generation. I will rework my patches to use sin/cos functions from
fixp-arith.h.
>
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