Add libgmp 6.2.0 to third_party
Don't build it yet. That will come in the next review.
Change-Id: Idf3266558165e5ab45f4a41c98cc8c838c8244d5
diff --git a/third_party/gmp/mpf/cmp_ui.c b/third_party/gmp/mpf/cmp_ui.c
new file mode 100644
index 0000000..a9a6036
--- /dev/null
+++ b/third_party/gmp/mpf/cmp_ui.c
@@ -0,0 +1,87 @@
+/* mpf_cmp_ui -- Compare a float with an unsigned integer.
+
+Copyright 1993-1995, 1999, 2001, 2002, 2015 Free Software Foundation, Inc.
+
+This file is part of the GNU MP Library.
+
+The GNU MP Library is free software; you can redistribute it and/or modify
+it under the terms of either:
+
+ * the GNU Lesser General Public License as published by the Free
+ Software Foundation; either version 3 of the License, or (at your
+ option) any later version.
+
+or
+
+ * the GNU General Public License as published by the Free Software
+ Foundation; either version 2 of the License, or (at your option) any
+ later version.
+
+or both in parallel, as here.
+
+The GNU MP Library is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+You should have received copies of the GNU General Public License and the
+GNU Lesser General Public License along with the GNU MP Library. If not,
+see https://www.gnu.org/licenses/. */
+
+#include "gmp-impl.h"
+
+int
+mpf_cmp_ui (mpf_srcptr u, unsigned long int vval) __GMP_NOTHROW
+{
+ mp_srcptr up;
+ mp_size_t usize;
+ mp_exp_t uexp;
+ mp_limb_t ulimb;
+
+ usize = SIZ (u);
+
+ /* 1. Is U negative? */
+ if (usize < 0)
+ return -1;
+ /* We rely on usize being non-negative in the code that follows. */
+
+ if (vval == 0)
+ return usize != 0;
+
+ /* 2. Are the exponents different (V's exponent == 1)? */
+ uexp = EXP (u);
+
+#if GMP_NAIL_BITS != 0
+ if (uexp != 1 + (vval > GMP_NUMB_MAX))
+ return (uexp < 1 + (vval > GMP_NUMB_MAX)) ? -1 : 1;
+#else
+ if (uexp != 1)
+ return (uexp < 1) ? -1 : 1;
+#endif
+
+ up = PTR (u);
+
+ ASSERT (usize > 0);
+ ulimb = up[--usize];
+#if GMP_NAIL_BITS != 0
+ if (uexp == 2)
+ {
+ if ((ulimb >> GMP_NAIL_BITS) != 0)
+ return 1;
+ ulimb = (ulimb << GMP_NUMB_BITS);
+ if (usize != 0) ulimb |= up[--usize];
+ }
+#endif
+
+ /* 3. Compare the most significant mantissa limb with V. */
+ if (ulimb != vval)
+ return (ulimb < vval) ? -1 : 1;
+
+ /* Ignore zeroes at the low end of U. */
+ for (; *up == 0; ++up)
+ --usize;
+
+ /* 4. Now, if the number of limbs are different, we have a difference
+ since we have made sure the trailing limbs are not zero. */
+ return (usize > 0);
+}