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/chre-3.4.0/external/kiss_fft/
Dkiss_fft.c62 const size_t m2=2*m; in kf_bfly4() local
69 C_FIXDIV(*Fout,4); C_FIXDIV(Fout[m],4); C_FIXDIV(Fout[m2],4); C_FIXDIV(Fout[m3],4); in kf_bfly4()
72 C_MUL(scratch[1],Fout[m2] , *tw2 ); in kf_bfly4()
79 C_SUB( Fout[m2], *Fout, scratch[3] ); in kf_bfly4()
108 const size_t m2 = 2*m; in kf_bfly3() local
117 C_FIXDIV(*Fout,3); C_FIXDIV(Fout[m],3); C_FIXDIV(Fout[m2],3); in kf_bfly3()
120 C_MUL(scratch[2],Fout[m2] , *tw2); in kf_bfly3()
134 Fout[m2].r = Fout[m].r + scratch[0].i; in kf_bfly3()
135 Fout[m2].i = Fout[m].i - scratch[0].r; in kf_bfly3()
Dkissfft.hh157 const size_t m2 = 2*m; in kf_bfly3() local
166 C_FIXDIV(*Fout,3); C_FIXDIV(Fout[m],3); C_FIXDIV(Fout[m2],3); in kf_bfly3()
169 C_MUL(scratch[2],Fout[m2] , *tw2); in kf_bfly3()
182 … Fout[m2] = cpx_type( Fout[m].real() + scratch[0].imag() , Fout[m].imag() - scratch[0].real() ); in kf_bfly3()