(__ieee754_acoshl): acosh(x) = ln(2x) if x > 2^54.

diff --git a/sysdeps/ieee754/ldbl-128/e_acoshl.c b/sysdeps/ieee754/ldbl-128/e_acoshl.c
index 7f79340..62170d4 100644 (file)
--- a/sysdeps/ieee754/ldbl-128/e_acoshl.c
+++ b/sysdeps/ieee754/ldbl-128/e_acoshl.c
@@ -51,7 +51,7 @@ ln2   = 0.6931471805599453094172321214581766L;
        GET_LDOUBLE_WORDS64(hx,lx,x);
        if(hx<0x3fff000000000000LL) {           /* x < 1 */
            return (x-x)/(x-x);
-       } else if(hx >=0x401b000000000000LL) {  /* x > 2**28 */
+       } else if(hx >=0x4035000000000000LL) {  /* x > 2**54 */
            if(hx >=0x7fff000000000000LL) {     /* x is inf of NaN */
                return x+x;
            } else