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676   This function calculates a mantissa corresponding to the fractional
688 FIXP_SGL mantissa;
716 mantissa = 0.5f;
718 /* Amplify mantissa according to the fractional part of the
726 multiply mantissa with the corresponding factor: */
727 mantissa = (FIXP_SGL)((mantissa * pow2[bit]) << 1);
738 by the shift. This will be compensated by a mantissa of 0.5*sqrt(2)
740 mantissa = (exponent & ampShift) ? FL2FXCONST_SGL(0.707106781186548f)
746 Mantissa was set to 0.5 (instead of 1.0, therefore increase exponent by
752 /* Combine mantissa and exponent and write back the result */
754 ((FIXP_SGL)((SHORT)(FIXP_SGL)mantissa & MASK_M)) +
861 /* +1 to compensate for a mantissa of 0.5 instead of 1.0 */
864 (FIXP_SGL)(((LONG)FL2FXCONST_SGL(0.5f)) + /* mantissa */