1 files changed, 60 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/ieee754/flt-32/e_sinhf.c b/REORG.TODO/sysdeps/ieee754/flt-32/e_sinhf.c
new file mode 100644
index 0000000000..6100d95c55
--- /dev/null
+++ b/REORG.TODO/sysdeps/ieee754/flt-32/e_sinhf.c
@@ -0,0 +1,60 @@
+/* e_sinhf.c -- float version of e_sinh.c.
+ * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
+ */
+
+/*
+ * ====================================================
+ * 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.
+ * ====================================================
+ */
+
+#include <float.h>
+#include <math.h>
+#include <math_private.h>
+
+static const float one = 1.0, shuge = 1.0e37;
+
+float
+__ieee754_sinhf(float x)
+{
+	float t,w,h;
+	int32_t ix,jx;
+
+	GET_FLOAT_WORD(jx,x);
+	ix = jx&0x7fffffff;
+
+    /* x is INF or NaN */
+	if(__builtin_expect(ix>=0x7f800000, 0)) return x+x;
+
+	h = 0.5;
+	if (jx<0) h = -h;
+    /* |x| in [0,22], return sign(x)*0.5*(E+E/(E+1))) */
+	if (ix < 0x41b00000) {		/* |x|<22 */
+	    if (__builtin_expect(ix<0x31800000, 0)) {	/* |x|<2**-28 */
+		math_check_force_underflow (x);
+		if(shuge+x>one) return x;/* sinh(tiny) = tiny with inexact */
+	    }
+	    t = __expm1f(fabsf(x));
+	    if(ix<0x3f800000) return h*((float)2.0*t-t*t/(t+one));
+	    return h*(t+t/(t+one));
+	}
+
+    /* |x| in [22, log(maxdouble)] return 0.5*exp(|x|) */
+	if (ix < 0x42b17180)  return h*__ieee754_expf(fabsf(x));
+
+    /* |x| in [log(maxdouble), overflowthresold] */
+	if (ix<=0x42b2d4fc) {
+	    w = __ieee754_expf((float)0.5*fabsf(x));
+	    t = h*w;
+	    return t*w;
+	}
+
+    /* |x| > overflowthresold, sinh(x) overflow */
+	return math_narrow_eval (x*shuge);
+}
+strong_alias (__ieee754_sinhf, __sinhf_finite)