1 files changed, 89 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/ieee754/dbl-64/s_ceil.c b/REORG.TODO/sysdeps/ieee754/dbl-64/s_ceil.c
new file mode 100644
index 0000000000..c291c26f57
--- /dev/null
+++ b/REORG.TODO/sysdeps/ieee754/dbl-64/s_ceil.c
@@ -0,0 +1,89 @@
+/* @(#)s_ceil.c 5.1 93/09/24 */
+/*
+ * ====================================================
+ * 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.
+ * ====================================================
+ */
+
+/*
+ * ceil(x)
+ * Return x rounded toward -inf to integral value
+ * Method:
+ *	Bit twiddling.
+ */
+
+#include <math.h>
+#include <math_private.h>
+
+double
+__ceil (double x)
+{
+  int32_t i0, i1, j0;
+  u_int32_t i, j;
+  EXTRACT_WORDS (i0, i1, x);
+  j0 = ((i0 >> 20) & 0x7ff) - 0x3ff;
+  if (j0 < 20)
+    {
+      if (j0 < 0)
+	{
+	  /* return 0*sign(x) if |x|<1 */
+	  if (i0 < 0)
+	    {
+	      i0 = 0x80000000; i1 = 0;
+	    }
+	  else if ((i0 | i1) != 0)
+	    {
+	      i0 = 0x3ff00000; i1 = 0;
+	    }
+	}
+      else
+	{
+	  i = (0x000fffff) >> j0;
+	  if (((i0 & i) | i1) == 0)
+	    return x;                        /* x is integral */
+	  if (i0 > 0)
+	    i0 += (0x00100000) >> j0;
+	  i0 &= (~i); i1 = 0;
+	}
+    }
+  else if (j0 > 51)
+    {
+      if (j0 == 0x400)
+	return x + x;                   /* inf or NaN */
+      else
+	return x;                       /* x is integral */
+    }
+  else
+    {
+      i = ((u_int32_t) (0xffffffff)) >> (j0 - 20);
+      if ((i1 & i) == 0)
+	return x;                       /* x is integral */
+      if (i0 > 0)
+	{
+	  if (j0 == 20)
+	    i0 += 1;
+	  else
+	    {
+	      j = i1 + (1 << (52 - j0));
+	      if (j < i1)
+		i0 += 1;                /* got a carry */
+	      i1 = j;
+	    }
+	}
+      i1 &= (~i);
+    }
+  INSERT_WORDS (x, i0, i1);
+  return x;
+}
+#ifndef __ceil
+weak_alias (__ceil, ceil)
+# ifdef NO_LONG_DOUBLE
+strong_alias (__ceil, __ceill)
+weak_alias (__ceil, ceill)
+# endif
+#endif