Lines Matching defs:log2
2 * Double-precision log2(x) function.
32 log2 (double x)
103 /* log2(x) = log2(z/c) + log2(c) + k. */
120 /* hi + lo = r/ln2 + log2(c) + k. */
125 /* log2(r+1) = r/ln2 + r^2*poly(r). */
138 strong_alias (log2, __log2_finite)
139 hidden_alias (log2, __ieee754_log2)
141 long double log2l (long double x) { return log2 (x); }
145 TEST_SIG (S, D, 1, log2, 0.01, 11.1)
146 TEST_ULP (log2, 0.05)
147 TEST_ULP_NONNEAREST (log2, 0.5)
148 TEST_INTERVAL (log2, 0, 0xffff000000000000, 10000)
149 TEST_INTERVAL (log2, 0x1p-4, 0x1p4, 40000)
150 TEST_INTERVAL (log2, 0, inf, 40000)