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82 long double lo, xn; in sqrtl() local126 xn = sqrt(u.e); /* 53-bit estimate of sqrtl(x). */ in sqrtl()128 xn = (xn + (u.e / xn)) * 0.5; /* 106-bit estimate. */ in sqrtl()132 lo = (lo - u.e) / xn; /* Low bits divided by xn. */ in sqrtl()133 xn = xn + (u.e / xn); /* High portion of estimate. */ in sqrtl()134 u.e = xn + lo; /* Combine everything. */ in sqrtl()140 xn = x / u.e; /* Chopped quotient (inexact?). */ in sqrtl()143 if (xn == u.e) { in sqrtl()148 xn = dec(xn); /* xn = xn - ulp. */ in sqrtl()152 xn = inc(xn); /* xn = xn + ulp. */ in sqrtl()[all …]