97 	int hx,ix;  local
100 	ix = hx&0x7fffffff;
101 	if(ix>=0x7ff00000) return one/x;
103 	if(ix >= 0x40000000) {	/* |x| >= 2.0 */
108 		if(ix<0x7fe00000) {  /* make sure y+y not overflow */
117 		if(ix>0x48000000) z = (invsqrtpi*cc)/ieee_sqrt(y);
125 	if(ix<0x3e400000) {	/* |x|<2**-27 */
166 	int hx,ix,lx;  local
169         ix = 0x7fffffff&hx;
172 	if(ix>=0x7ff00000) return  one/(x+x*x); 
173         if((ix|lx)==0) return -one/zero;
175         if(ix >= 0x40000000) {  /* |x| >= 2.0 */
180                 if(ix<0x7fe00000) {  /* make sure x+x not overflow */
196                 if(ix>0x48000000) z = (invsqrtpi*ss)/ieee_sqrt(x);
203         if(ix<=0x3c900000) {    /* x < 2**-54 */
331         int ix;  local
332         ix = 0x7fffffff&__HI(x);
333         if(ix>=0x40200000)     {p = pr8; q= ps8;}
334         else if(ix>=0x40122E8B){p = pr5; q= ps5;}
335         else if(ix>=0x4006DB6D){p = pr3; q= ps3;}
336         else if(ix>=0x40000000){p = pr2; q= ps2;}
467 	int ix;  local
468 	ix = 0x7fffffff&__HI(x);
469 	if(ix>=0x40200000)     {p = qr8; q= qs8;}
470 	else if(ix>=0x40122E8B){p = qr5; q= qs5;}
471 	else if(ix>=0x4006DB6D){p = qr3; q= qs3;}
472 	else if(ix>=0x40000000){p = qr2; q= qs2;}