Lines Matching +full:2 +full:p5
13 #define P20 0x1.5555555555555p-2 /* 1/3. */
14 #define P21 0x1.5555555555555p-1 /* 2/3. */
17 #define P41 0x1.999999999999ap-2 /* 2/5. */
18 #define P42 0x1.11111111111111p-3 /* 2/15. */
21 #define P51 0x1.c71c71c71c71cp-3 /* 2/9. */
22 #define P52 0x1.6c16c16c16c17p-5 /* 2/45. */
26 #define Q6 0x1.2aaaaaaaaaaabp0
28 #define Q8 0x1.2p0
31 /* Ri = -2 * i / ((i+1)*(i+2)). */
40 Let d = x - r, and scale = 2 / sqrt(pi) * exp(-r^2). For x near r,
44 poly(r, d) = 1 - r d + (2/3 r^2 - 1/3) d^2 - r (1/3 r^2 - 1/2) d^3
45 + (2/15 r^4 - 2/5 r^2 + 1/10) d^4
46 - r * (2/45 r^4 - 2/9 r^2 + 1/6) d^5
51 2(i+1)p_i + 2r(i+2)p_{i+1} + (i+2)(i+3)p_{i+2} = 0,
71 /* erfc(nan)=nan, erfc(+inf)=0 and erfc(-inf)=2. */ in erfc()
87 to 2/sqrt(pi), when x reduced to r = 0. */ in erfc()
91 /* These values are scaled by 2^128. */ in erfc()
104 double p5 = -r * fma (fma (P52, r2, -P51), r2, P50); in erfc() local
106 p_{i+2} = (p_i + r * Q_{i+1} * p_{i+1}) * R_{i+1}. */ in erfc()
107 double p6 = fma (Q5 * r, p5, p4) * R5; in erfc()
108 double p7 = fma (Q6 * r, p6, p5) * R6; in erfc()
115 double p56 = fma (p6, d, p5); in erfc()