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/inp_str.c b/third_party/gmp/mpf/inp_str.c
new file mode 100644
index 0000000..c661a79
--- /dev/null
+++ b/third_party/gmp/mpf/inp_str.c
@@ -0,0 +1,92 @@
+/* mpf_inp_str(dest_float, stream, base) -- Input a number in base
+ BASE from stdio stream STREAM and store the result in DEST_FLOAT.
+
+Copyright 1996, 2000-2002, 2005 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 <stdio.h>
+#include <ctype.h>
+#include "gmp-impl.h"
+
+size_t
+mpf_inp_str (mpf_ptr rop, FILE *stream, int base)
+{
+ char *str;
+ size_t alloc_size, str_size;
+ int c;
+ int res;
+ size_t nread;
+
+ if (stream == 0)
+ stream = stdin;
+
+ alloc_size = 100;
+ str = __GMP_ALLOCATE_FUNC_TYPE (alloc_size, char);
+ str_size = 0;
+ nread = 0;
+
+ /* Skip whitespace. */
+ do
+ {
+ c = getc (stream);
+ nread++;
+ }
+ while (isspace (c));
+
+ for (;;)
+ {
+ if (str_size >= alloc_size)
+ {
+ size_t old_alloc_size = alloc_size;
+ alloc_size = alloc_size * 3 / 2;
+ str = __GMP_REALLOCATE_FUNC_TYPE (str, old_alloc_size, alloc_size, char);
+ }
+ if (c == EOF || isspace (c))
+ break;
+ str[str_size++] = c;
+ c = getc (stream);
+ }
+ ungetc (c, stream);
+ nread--;
+
+ if (str_size >= alloc_size)
+ {
+ size_t old_alloc_size = alloc_size;
+ alloc_size = alloc_size * 3 / 2;
+ str = __GMP_REALLOCATE_FUNC_TYPE (str, old_alloc_size, alloc_size, char);
+ }
+ str[str_size] = 0;
+
+ res = mpf_set_str (rop, str, base);
+ (*__gmp_free_func) (str, alloc_size);
+
+ if (res == -1)
+ return 0; /* error */
+
+ return str_size + nread;
+}