fix wide printf forms ignoring width for %lc format specifier

[musl] / src / math / asinl.c

diff --git a/src/math/asinl.c b/src/math/asinl.c
index 8799341..347c535 100644 (file)
--- a/src/math/asinl.c
+++ b/src/math/asinl.c
@@ -23,27 +23,29 @@ long double asinl(long double x)
 }
 #elif (LDBL_MANT_DIG == 64 || LDBL_MANT_DIG == 113) && LDBL_MAX_EXP == 16384
 #include "__invtrigl.h"
-/* 0.95 */
-#define THRESH  ((0xe666666666666666ULL>>(64-(LDBL_MANH_SIZE-1)))|LDBL_NBIT)
+#if LDBL_MANT_DIG == 64
+#define CLOSETO1(u) (u.i.m>>56 >= 0xf7)
+#define CLEARBOTTOM(u) (u.i.m &= -1ULL << 32)
+#elif LDBL_MANT_DIG == 113
+#define CLOSETO1(u) (u.i.top >= 0xee00)
+#define CLEARBOTTOM(u) (u.i.lo = 0)
+#endif
 
 long double asinl(long double x)
 {
-       union IEEEl2bits u;
-       long double z,r,s;
-       uint16_t expsign, expt;
+       union ldshape u = {x};
+       long double z, r, s;
+       uint16_t e = u.i.se & 0x7fff;
+       int sign = u.i.se >> 15;
 
-       u.e = x;
-       expsign = u.xbits.expsign;
-       expt = expsign & 0x7fff;
-       if (expt >= 0x3fff) {   /* |x| >= 1 or nan */
-               if (expt == 0x3fff &&
-                   ((u.bits.manh&~LDBL_NBIT)|u.bits.manl) == 0)
-                       /* asin(+-1)=+-pi/2 with inexact */
+       if (e >= 0x3fff) {   /* |x| >= 1 or nan */
+               /* asin(+-1)=+-pi/2 with inexact */
+               if (x == 1 || x == -1)
                        return x*pio2_hi + 0x1p-120f;
                return 0/(x-x);
        }
-       if (expt < 0x3fff - 1) {  /* |x| < 0.5 */
-               if (expt < 0x3fff - 32) {  /* |x|<0x1p-32, asinl(x)=x */
+       if (e < 0x3fff - 1) {  /* |x| < 0.5 */
+               if (e < 0x3fff - (LDBL_MANT_DIG+1)/2) {
                        /* return x with inexact if x!=0 */
                        FORCE_EVAL(x + 0x1p120f);
                        return x;
@@ -54,18 +56,16 @@ long double asinl(long double x)
        z = (1.0 - fabsl(x))*0.5;
        s = sqrtl(z);
        r = __invtrigl_R(z);
-       if (u.bits.manh >= THRESH) { /* if |x| is close to 1 */
+       if (CLOSETO1(u)) {
                x = pio2_hi - (2*(s+s*r)-pio2_lo);
        } else {
                long double f, c;
-               u.e = s;
-               u.bits.manl = 0;
-               f = u.e;
-               c = (z-f*f)/(s+f);
+               u.f = s;
+               CLEARBOTTOM(u);
+               f = u.f;
+               c = (z - f*f)/(s + f);
                x = 0.5*pio2_hi-(2*s*r - (pio2_lo-2*c) - (0.5*pio2_hi-2*f));
        }
-       if (expsign>>15)
-               return -x;
-       return x;
+       return sign ? -x : x;
 }
 #endif