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    Searched defs:reciprocal (Results 1 - 3 of 3) sorted by relevancy

  /src/sys/external/bsd/compiler_rt/dist/lib/builtins/
divsf3.c 78 // [1, 2.0) and get a Q32 approximate reciprocal using a small minimax
79 // polynomial approximation: reciprocal = 3/4 + 1/sqrt(2) - b/2. This
82 uint32_t reciprocal = UINT32_C(0x7504f333) - q31b; local in function:__divsf3
84 // Now refine the reciprocal estimate using a Newton-Raphson iteration:
92 correction = -((uint64_t)reciprocal * q31b >> 32);
93 reciprocal = (uint64_t)reciprocal * correction >> 31;
94 correction = -((uint64_t)reciprocal * q31b >> 32);
95 reciprocal = (uint64_t)reciprocal * correction >> 31
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divdf3.c 78 // [1, 2.0) and get a Q32 approximate reciprocal using a small minimax
79 // polynomial approximation: reciprocal = 3/4 + 1/sqrt(2) - b/2. This
84 // Now refine the reciprocal estimate using a Newton-Raphson iteration:
108 uint64_t correction, reciprocal; local in function:__divdf3
112 reciprocal = (uint64_t)recip32*cHi + ((uint64_t)recip32*cLo >> 32);
115 // 64-bit reciprocal estimate downward to ensure that it is strictly smaller
116 // than the infinitely precise exact reciprocal. Because the computation
119 reciprocal -= 2;
121 // The numerical reciprocal is accurate to within 2^-56, lies in the
122 // interval [0.5, 1.0), and is strictly smaller than the true reciprocal
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divtf3.c 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; local in function:__divtf3
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
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