Rename truncate() from 30ce461d9887 to avoid conflict with POSIX version
Rename truncate() from 30ce461d9887 to avoid conflict with POSIX version

strategies/avx2/dct-avx2.c:55:23: error: static declaration of 'truncate' follows non-static declaration
static INLINE __m256i truncate(__m256i v, __m256i debias, int32_t shift)
                      ^
/usr/include/stdio.h:448:6: note: previous declaration is here
int      truncate(const char *, __off_t);
         ^

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