fix double-processing of DT_RELR relocations in ldso relocating itself

[musl] / src / math / sincosl.c

diff --git a/src/math/sincosl.c b/src/math/sincosl.c
index e14129a..d3ac1c4 100644 (file)
--- 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]);