Lines Matching +full:2 +full:p5

25  *   2. Approximation of exp(r) by a special rational function on
28  *	    R(r**2) = r*(exp(r)+1)/(exp(r)-1) = 2 + r*r/6 - r**4/360 + ...
31  *	of this polynomial approximation is bounded by 2**-59. In
33  *	    R(z) ~ 2.0 + P1*z + P2*z**2 + P3*z**3 + P4*z**4 + P5*z**5
34  *  	(where z=r*r, and the values of P1 to P5 are listed below)
37  *	    | 2.0+P1*z+...+P5*z   -  R(z) | <= 2 
40  *                             2*r
45  *		                  2 - R1(r)
47  *			         2       4             10
48  *		R1(r) = r - (P1*r  + P2*r  + ... + P5*r   ).
52  *	   exp(x) = 2^k * exp(r)
82 halF[2]	= {0.5,-0.5,},
85 ln2HI[2]   ={ 6.93147180369123816490e-01,  /* 0x3fe62e42, 0xfee00000 */
87 ln2LO[2]   ={ 1.90821492927058770002e-10,  /* 0x3dea39ef, 0x35793c76 */
94 P5   =  4.13813679705723846039e-08; /* 0x3E663769, 0x72BEA4D0 */  variable
98 twom1000= 9.33263618503218878990e-302;     /* 2**-1000=0x01700000,0*/
136 	else if(hx < 0x3e300000)  {	/* when |x|<2**-28 */  in exp()
147 	c  = x - t*(P1+t*(P2+t*(P3+t*(P4+t*P5))));  in exp()