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/external/aac/libFDK/src/
H A Dfixpoint_math.cpp824 FIXP_DBL fLog2(FIXP_DBL x_m, INT x_e, INT *result_e) argument
829 if ( x_m <= FL2FXCONST_DBL(0.0f) ) {
838 /* Move input value x_m * 2^x_e toward 1.0, where the taylor approximation
843 b_norm = fNormz(x_m)-1;
844 x2_m = x_m << b_norm;
861 /* Add exponent part. log2(x_m * 2^x_e) = log2(x_m) + x_e */
880 FIXP_DBL fLog2(FIXP_DBL x_m, INT x_e) argument
882 if ( x_m <= FL2FXCONST_DBL(0.0f) ) {
883 x_m
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