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/kernel/linux/linux-5.10/drivers/media/pci/cx88/
Dcx88-dsp.c100 s32 s_prev2 = 0; in int_goertzel() local
108 s32 s = x[i] + ((s64)coeff * s_prev / 32768) - s_prev2; in int_goertzel()
110 s_prev2 = s_prev; in int_goertzel()
114 tmp = (s64)s_prev2 * s_prev2 + (s64)s_prev * s_prev - in int_goertzel()
115 (s64)coeff * s_prev2 * s_prev / 32768; in int_goertzel()