1 files changed, 79 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/ieee754/ldbl-128ibm/e_sinhl.c b/REORG.TODO/sysdeps/ieee754/ldbl-128ibm/e_sinhl.c
new file mode 100644
index 0000000000..67d9d24ce7
--- /dev/null
+++ b/REORG.TODO/sysdeps/ieee754/ldbl-128ibm/e_sinhl.c
@@ -0,0 +1,79 @@
+/*
+ * ====================================================
+ * 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.
+ * ====================================================
+ */
+
+
+/* __ieee754_sinh(x)
+ * Method :
+ * mathematically sinh(x) if defined to be (exp(x)-exp(-x))/2
+ *	1. Replace x by |x| (sinh(-x) = -sinh(x)).
+ *	2.
+ *						    E + E/(E+1)
+ *	    0        <= x <= 40     :  sinh(x) := --------------, E=expm1(x)
+ *							2
+ *
+ *	    40       <= x <= lnovft :  sinh(x) := exp(x)/2
+ *	    lnovft   <= x <= ln2ovft:  sinh(x) := exp(x/2)/2 * exp(x/2)
+ *	    ln2ovft  <  x	    :  sinh(x) := x*shuge (overflow)
+ *
+ * Special cases:
+ *	sinh(x) is |x| if x is +INF, -INF, or NaN.
+ *	only sinh(0)=0 is exact for finite x.
+ */
+
+#include <float.h>
+#include <math.h>
+#include <math_private.h>
+
+static const long double one = 1.0, shuge = 1.0e307;
+
+long double
+__ieee754_sinhl(long double x)
+{
+	long double t,w,h;
+	int64_t ix,jx;
+	double xhi;
+
+    /* High word of |x|. */
+	xhi = ldbl_high (x);
+	EXTRACT_WORDS64 (jx, xhi);
+	ix = jx&0x7fffffffffffffffLL;
+
+    /* x is INF or NaN */
+	if(ix>=0x7ff0000000000000LL) return x+x;
+
+	h = 0.5;
+	if (jx<0) h = -h;
+    /* |x| in [0,40], return sign(x)*0.5*(E+E/(E+1))) */
+	if (ix < 0x4044000000000000LL) {	/* |x|<40 */
+	    if (ix<0x3c90000000000000LL) {	/* |x|<2**-54 */
+		math_check_force_underflow (x);
+		if(shuge+x>one) return x;/* sinhl(tiny) = tiny with inexact */
+	    }
+	    t = __expm1l(fabsl(x));
+	    if(ix<0x3ff0000000000000LL) return h*(2.0*t-t*t/(t+one));
+	    w = t/(t+one);
+	    return h*(t+w);
+	}
+
+    /* |x| in [40, log(maxdouble)] return 0.5*exp(|x|) */
+	if (ix < 0x40862e42fefa39efLL)  return h*__ieee754_expl(fabsl(x));
+
+    /* |x| in [log(maxdouble), overflowthresold] */
+	if (ix <= 0x408633ce8fb9f87eLL) {
+	    w = __ieee754_expl(0.5*fabsl(x));
+	    t = h*w;
+	    return t*w;
+	}
+
+    /* |x| > overflowthresold, sinh(x) overflow */
+	return x*shuge;
+}
+strong_alias (__ieee754_sinhl, __sinhl_finite)