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/Linux-v4.19/drivers/media/pci/cx88/
Dcx88-dsp.c108 s32 s_prev = 0; in int_goertzel() local
117 s32 s = x[i] + ((s64)coeff * s_prev / 32768) - s_prev2; in int_goertzel()
119 s_prev2 = s_prev; in int_goertzel()
120 s_prev = s; in int_goertzel()
123 tmp = (s64)s_prev2 * s_prev2 + (s64)s_prev * s_prev - in int_goertzel()
124 (s64)coeff * s_prev2 * s_prev / 32768; in int_goertzel()