--- /dev/null
+/* int mpz_fits_X_p (mpz_t z) -- test whether z fits signed type X.
+
+Copyright 1997, 2000, 2001, 2002 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 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.
+
+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 Lesser General Public
+License for more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. */
+
+#include "gmp.h"
+#include "gmp-impl.h"
+
+
+int
+FUNCTION (mpz_srcptr z)
+{
+ mp_size_t n = SIZ(z);
+ mp_ptr p = PTR(z);
+ mp_limb_t limb = p[0];
+
+ if (n == 0)
+ return 1;
+ if (n == 1)
+ return limb <= MAXIMUM;
+ if (n == -1)
+ return limb <= - (mp_limb_t) MINIMUM;
+#if GMP_NAIL_BITS != 0
+ {
+ if ((p[1] >> GMP_NAIL_BITS) == 0)
+ {
+ limb += p[1] << GMP_NUMB_BITS;
+ if (n == 2)
+ return limb <= MAXIMUM;
+ if (n == -2)
+ return limb <= - (mp_limb_t) MINIMUM;
+ }
+ }
+#endif
+ return 0;
+}