41 pi_hi = 3.1415926814079285e+00,	/* 0x400921fb 0x58000000 */
42 pi_lo =-2.7818135228334233e-08;	/* 0xbe5dde97 0x3dcb3b3a */
47 volatile static const double vzero = 0;
58 	ix = hx & 0x7fff;  in cospil()
63 	if (ix < 0x3fff) {			/* |x| < 1 */  in cospil()
64 		if (ix < 0x3ffd) {		/* |x| < 0.25 */  in cospil()
65 			if (ix < 0x3fdd) {	/* |x| < 0x1p-34 */  in cospil()
66 				if ((int)x == 0)  in cospil()
72 		if (ix < 0x3ffe)			/* |x| < 0.5 */  in cospil()
74 		else if (lx < 0xc000000000000000ull) {	/* |x| < 0.75 */  in cospil()
76 				RETURNI(0);  in cospil()
83 	if (ix < 0x403e) {			/* 1 <= |x| < 0x1p63 */  in cospil()
88 		if (ix < 0x3ffe) {			/* |x| < 0.5 */  in cospil()
89 			if (ix < 0x3ffd)		/* |x| < 0.25 */  in cospil()
90 				c = ix == 0 ? 1 : __kernel_cospil(ax);  in cospil()
95 			if (lx < 0xc000000000000000ull) { /* |x| < 0.75 */  in cospil()
97 					RETURNI(0);  in cospil()
104 			x -= 0x1p40;  in cospil()
106 			x -= 0x1p30;  in cospil()
112 	if (ix >= 0x7fff)  in cospil()
116 	 * For 0x1p63 <= |x| < 0x1p64 need to determine if x is an even  in cospil()
118 	 * For |x| >= 0x1p64, it is always an even integer, so t = 1.  in cospil()
120 	RETURNI(ix >= 0x403f ? 1 : ((lx & 1) ? -1 : 1));  in cospil()