Lines Matching refs:reciprocal
78 // [1, 2.0) and get a Q64 approximate reciprocal using a small minimax
79 // polynomial approximation: reciprocal = 3/4 + 1/sqrt(2) - b/2. This
85 // Now refine the reciprocal estimate using a Newton-Raphson iteration:
112 rep_t correction, reciprocal;
128 reciprocal = r64cH + (r64cL >> 64);
131 // 128-bit reciprocal estimate downward to ensure that it is strictly smaller
132 // than the infinitely precise exact reciprocal. Because the computation
135 reciprocal -= 2;
137 // The numerical reciprocal is accurate to within 2^-112, lies in the
138 // interval [0.5, 1.0), and is strictly smaller than the true reciprocal
139 // of b. Multiplying a by this reciprocal thus gives a numerical q = a/b
150 wideMultiply(aSignificand << 2, reciprocal, "ient, "ientLo);
