X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Fmath%2Fsincosl.c;h=d3ac1c4c8c29e11067d55a3a99fa82eb888c5dd5;hb=29e4319178cbc2a4e9f058a99ae8098d4b6ac055;hp=e14129a23361566e3600b91347ac6726d9f2f9a5;hpb=2e8c8fbe7d65ba0026cb084dc8570d94cbc908ff;p=musl

diff --git a/src/math/sincosl.c b/src/math/sincosl.c
index e14129a2..d3ac1c4c 100644
--- a/src/math/sincosl.c
+++ b/src/math/sincosl.c
@@ -1,43 +1,39 @@
+#define _GNU_SOURCE
 #include "libm.h"
 
 #if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024
 void sincosl(long double x, long double *sin, long double *cos)
 {
-	double s, c;
-	sincos(x, &s, &c);
-	*sin = s;
-	*cos = c;
+	double sind, cosd;
+	sincos(x, &sind, &cosd);
+	*sin = sind;
+	*cos = cosd;
 }
 #elif (LDBL_MANT_DIG == 64 || LDBL_MANT_DIG == 113) && LDBL_MAX_EXP == 16384
 void sincosl(long double x, long double *sin, long double *cos)
 {
-	union IEEEl2bits u;
-	int n;
+	union ldshape u = {x};
+	unsigned n;
 	long double y[2], s, c;
 
-	u.e = x;
-	u.bits.sign = 0;
-
-	/* x = +-0 or subnormal */
-	if (!u.bits.exp) {
-		*sin = x;
-		*cos = 1.0;
-		return;
-	}
-
-	/* x = nan or inf */
-	if (u.bits.exp == 0x7fff) {
+	u.i.se &= 0x7fff;
+	if (u.i.se == 0x7fff) {
 		*sin = *cos = x - x;
 		return;
 	}
-
-	/* |x| < pi/4 */
-	if (u.e < M_PI_4) {
+	if (u.f < M_PI_4) {
+		if (u.i.se < 0x3fff - LDBL_MANT_DIG) {
+			/* raise underflow if subnormal */
+			if (u.i.se == 0) FORCE_EVAL(x*0x1p-120f);
+			*sin = x;
+			/* raise inexact if x!=0 */
+			*cos = 1.0 + x;
+			return;
+		}
 		*sin = __sinl(x, 0, 0);
 		*cos = __cosl(x, 0);
 		return;
 	}
-
 	n = __rem_pio2l(x, y);
 	s = __sinl(y[0], y[1], 1);
 	c = __cosl(y[0], y[1]);