1 files changed, 63 insertions, 0 deletions
diff --git a/sysdeps/ieee754/ldbl-128/s_frexpl.c b/sysdeps/ieee754/ldbl-128/s_frexpl.c
new file mode 100644
index 0000000000..6dbb60ece0
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-128/s_frexpl.c
@@ -0,0 +1,63 @@
+/* s_frexpl.c -- long double version of s_frexp.c.
+ * Conversion to IEEE quad long double by Jakub Jelinek, jj@ultra.linux.cz.
+ */
+
+/*
+ * ====================================================
+ * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
+ *
+ * Developed at SunPro, a Sun Microsystems, Inc. business.
+ * Permission to use, copy, modify, and distribute this
+ * software is freely granted, provided that this notice
+ * is preserved.
+ * ====================================================
+ */
+
+#if defined(LIBM_SCCS) && !defined(lint)
+static char rcsid[] = "$NetBSD: $";
+#endif
+
+/*
+ * for non-zero x
+ *	x = frexpl(arg,&exp);
+ * return a long double fp quantity x such that 0.5 <= |x| <1.0
+ * and the corresponding binary exponent "exp". That is
+ *	arg = x*2^exp.
+ * If arg is inf, 0.0, or NaN, then frexpl(arg,&exp) returns arg
+ * with *exp=0.
+ */
+
+#include "math.h"
+#include "math_private.h"
+
+#ifdef __STDC__
+static const long double
+#else
+static long double
+#endif
+two114 = 2.0769187434139310514121985316880384E+34L; /* 0x4071000000000000, 0 */
+
+#ifdef __STDC__
+	long double __frexpl(long double x, int *eptr)
+#else
+	long double __frexpl(x, eptr)
+	long double x; int *eptr;
+#endif
+{
+	u_int64_t hx, lx, ix;
+	GET_LDOUBLE_WORDS64(hx,lx,x);
+	ix = 0x7fffffffffffffffULL&hx;
+	*eptr = 0;
+	if(ix>=0x7fff000000000000ULL||((ix|lx)==0)) return x;	/* 0,inf,nan */
+	if (ix<0x0001000000000000ULL) {		/* subnormal */
+	    x *= two114;
+	    GET_LDOUBLE_MSW64(hx,x);
+	    ix = hx&0x7fffffffffffffffULL;
+	    *eptr = -114;
+	}
+	*eptr += (ix>>48)-16382;
+	hx = (hx&0x8000ffffffffffffULL) | 0x3ffe000000000000ULL;
+	SET_LDOUBLE_MSW64(x,hx);
+	return x;
+}
+weak_alias (__frexpl, frexpl)