b and a different constant c.
Example taken from libvpx
-<https://chromium.googlesource.com/webm/libvpx/+/refs/heads/main/vpx_dsp/fwd_txfm.c#132>:
+<https://chromium.googlesource.com/webm/libvpx/+/refs/tags/v1.13.0/vpx_dsp/fwd_txfm.c#132>:
```
#include <stdint.h>