1 /*-
12 /* s_sincosf.c -- float version of s_sincos.c.
28 p1pio2 = 1*M_PI_2,			/* 0x3FF921FB, 0x54442D18 */
29 p2pio2 = 2*M_PI_2,			/* 0x400921FB, 0x54442D18 */
30 p3pio2 = 3*M_PI_2,			/* 0x4012D97C, 0x7F3321D2 */
31 p4pio2 = 4*M_PI_2;			/* 0x401921FB, 0x54442D18 */
34 sincosf(float x, float *sn, float *cs)  in sincosf()  argument
41 	ix = hx & 0x7fffffff;  in sincosf()
43 	if (ix <= 0x3f490fda) {		/* |x| ~<= pi/4 */  in sincosf()
44 		if (ix < 0x39800000) {	/* |x| < 2**-12 */  in sincosf()
45 			if ((int)x == 0) {  in sincosf()
46 				*sn = x;	/* x with inexact if x != 0 */  in sincosf()
47 				*cs = 1;  in sincosf()
51 		__kernel_sincosdf(x, sn, cs);  in sincosf()
55 	if (ix <= 0x407b53d1) {		/* |x| ~<= 5*pi/4 */  in sincosf()
56 		if (ix <= 0x4016cbe3) {	/* |x| ~<= 3pi/4 */  in sincosf()
57 			if (hx > 0) {  in sincosf()
58 				__kernel_sincosdf(x - p1pio2, cs, sn);  in sincosf()
59 				*cs = -*cs;  in sincosf()
61 				__kernel_sincosdf(x + p1pio2, cs, sn);  in sincosf()
62 				*sn = -*sn;  in sincosf()
65 			if (hx > 0)  in sincosf()
66 				__kernel_sincosdf(x - p2pio2, sn, cs);  in sincosf()
68 				__kernel_sincosdf(x + p2pio2, sn, cs);  in sincosf()
69 			*sn = -*sn;  in sincosf()
70 			*cs = -*cs;  in sincosf()
75 	if (ix <= 0x40e231d5) {		/* |x| ~<= 9*pi/4 */  in sincosf()
76 		if (ix <= 0x40afeddf) {	/* |x| ~<= 7*pi/4 */  in sincosf()
77 			if (hx > 0) {  in sincosf()
78 				__kernel_sincosdf(x - p3pio2, cs, sn);  in sincosf()
79 				*sn = -*sn;  in sincosf()
81 				__kernel_sincosdf(x + p3pio2, cs, sn);  in sincosf()
82 				*cs = -*cs;  in sincosf()
85 			if (hx > 0)  in sincosf()
86 				__kernel_sincosdf(x - p4pio2, sn, cs);  in sincosf()
88 				__kernel_sincosdf(x + p4pio2, sn, cs);  in sincosf()
94 	if (ix >= 0x7f800000) {  in sincosf()
95 		*sn = x - x;  in sincosf()
96 		*cs = x - x;  in sincosf()
105 	case 0:  in sincosf()
107 		*cs = c;  in sincosf()
111 		*cs = -s;  in sincosf()
114 		*sn = -s;  in sincosf()
115 		*cs = -c;  in sincosf()
118 		*sn = -c;  in sincosf()
119 		*cs = s;  in sincosf()