math: new log2

[musl] / src / math / asinhl.c

diff --git a/src/math/asinhl.c b/src/math/asinhl.c
index db96624..8635f52 100644 (file)
--- a/src/math/asinhl.c
+++ b/src/math/asinhl.c
@@ -9,10 +9,7 @@ long double asinhl(long double x)
 /* asinh(x) = sign(x)*log(|x|+sqrt(x*x+1)) ~= x - x^3/6 + o(x^5) */
 long double asinhl(long double x)
 {
-       union {
-               long double f;
-               struct{uint64_t m; uint16_t se; uint16_t pad;} i;
-       } u = {.f = x};
+       union ldshape u = {x};
        unsigned e = u.i.se & 0x7fff;
        unsigned s = u.i.se >> 15;
 
@@ -31,8 +28,14 @@ long double asinhl(long double x)
                x = log1pl(x + x*x/(sqrtl(x*x+1)+1));
        } else {
                /* |x| < 0x1p-32, raise inexact if x!=0 */
-               FORCE_EVAL(x + 0x1p1000);
+               FORCE_EVAL(x + 0x1p120f);
        }
        return s ? -x : x;
 }
+#elif LDBL_MANT_DIG == 113 && LDBL_MAX_EXP == 16384
+// TODO: broken implementation to make things compile
+long double asinhl(long double x)
+{
+       return asinh(x);
+}
 #endif