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diff --git a/gmp-6.3.0/tests/cxx/t-constr.cc b/gmp-6.3.0/tests/cxx/t-constr.cc
new file mode 100644
index 0000000..500878e
--- /dev/null
+++ b/gmp-6.3.0/tests/cxx/t-constr.cc
@@ -0,0 +1,755 @@
+/* Test mp*_class constructors.
+
+Copyright 2001-2003 Free Software Foundation, Inc.
+
+This file is part of the GNU MP Library test suite.
+
+The GNU MP Library test suite is free software; you can redistribute it
+and/or modify it under the terms of the GNU 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 test suite 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 a copy of the GNU General Public License along with
+the GNU MP Library test suite.  If not, see https://www.gnu.org/licenses/.  */
+
+#include "config.h"
+
+#include <iostream>
+#include <string>
+
+#include "gmpxx.h"
+#include "gmp-impl.h"
+#include "tests.h"
+
+using namespace std;
+
+
+void
+check_mpz (void)
+{
+  // mpz_class()
+  {
+    mpz_class a; ASSERT_ALWAYS(a == 0);
+  }
+
+  // mpz_class(const mpz_class &)
+  // see below
+
+  // template <class T, class U> mpz_class(const __gmp_expr<T, U> &)
+  // not tested here, see t-unary.cc, t-binary.cc
+
+  // mpz_class(signed char)
+  {
+    signed char a = -127;
+    mpz_class b(a); ASSERT_ALWAYS(b == -127);
+  }
+
+  // mpz_class(unsigned char)
+  {
+    unsigned char a = 255;
+    mpz_class b(a); ASSERT_ALWAYS(b == 255);
+  }
+
+  // either signed or unsigned char, machine dependent
+  {
+    mpz_class a('A'); ASSERT_ALWAYS(a == 65);
+  }
+  {
+    mpz_class a('z'); ASSERT_ALWAYS(a == 122);
+  }
+
+  // mpz_class(signed int)
+  {
+    signed int a = 0;
+    mpz_class b(a); ASSERT_ALWAYS(b == 0);
+  }
+  {
+    signed int a = -123;
+    mpz_class b(a); ASSERT_ALWAYS(b == -123);
+  }
+  {
+    signed int a = 4567;
+    mpz_class b(a); ASSERT_ALWAYS(b == 4567);
+  }
+
+  // mpz_class(unsigned int)
+  {
+    unsigned int a = 890;
+    mpz_class b(a); ASSERT_ALWAYS(b == 890);
+  }
+
+  // mpz_class(signed short int)
+  {
+    signed short int a = -12345;
+    mpz_class b(a); ASSERT_ALWAYS(b == -12345);
+  }
+
+  // mpz_class(unsigned short int)
+  {
+    unsigned short int a = 54321u;
+    mpz_class b(a); ASSERT_ALWAYS(b == 54321u);
+  }
+
+  // mpz_class(signed long int)
+  {
+    signed long int a = -1234567890L;
+    mpz_class b(a); ASSERT_ALWAYS(b == -1234567890L);
+  }
+
+  // mpz_class(unsigned long int)
+  {
+    unsigned long int a = 1UL << 30;
+    mpz_class b(a); ASSERT_ALWAYS(b == 1073741824L);
+  }
+
+  // mpz_class(float)
+  {
+    float a = 123.45;
+    mpz_class b(a); ASSERT_ALWAYS(b == 123);
+  }
+
+  // mpz_class(double)
+  {
+    double a = 3.141592653589793238;
+    mpz_class b(a); ASSERT_ALWAYS(b == 3);
+  }
+
+  // mpz_class(long double)
+  // currently not implemented
+
+  // mpz_class(const char *)
+  {
+    const char *a = "1234567890";
+    mpz_class b(a); ASSERT_ALWAYS(b == 1234567890L);
+  }
+
+  // mpz_class(const char *, int)
+  {
+    const char *a = "FFFF";
+    int base = 16;
+    mpz_class b(a, base); ASSERT_ALWAYS(b == 65535u);
+  }
+
+  // mpz_class(const std::string &)
+  {
+    string a("1234567890");
+    mpz_class b(a); ASSERT_ALWAYS(b == 1234567890L);
+  }
+
+  // mpz_class(const std::string &, int)
+  {
+    string a("7777");
+    int base = 8;
+    mpz_class b(a, base); ASSERT_ALWAYS(b == 4095);
+  }
+
+  // mpz_class(const char *) with invalid
+  {
+    try {
+      const char *a = "ABC";
+      mpz_class b(a);
+      ASSERT_ALWAYS (0);  /* should not be reached */
+    } catch (invalid_argument&) {
+    }
+  }
+
+  // mpz_class(const char *, int) with invalid
+  {
+    try {
+      const char *a = "GHI";
+      int base = 16;
+      mpz_class b(a, base);
+      ASSERT_ALWAYS (0);  /* should not be reached */
+    } catch (invalid_argument&) {
+    }
+  }
+
+  // mpz_class(const std::string &) with invalid
+  {
+    try {
+      string a("abc");
+      mpz_class b(a);
+      ASSERT_ALWAYS (0);  /* should not be reached */
+    } catch (invalid_argument&) {
+    }
+  }
+
+  // mpz_class(const std::string &, int) with invalid
+  {
+    try {
+      string a("ZZZ");
+      int base = 8;
+      mpz_class b(a, base);
+      ASSERT_ALWAYS (0);  /* should not be reached */
+    } catch (invalid_argument&) {
+    }
+  }
+
+  // mpz_class(mpz_srcptr)
+  {
+    mpz_t a;
+    mpz_init_set_ui(a, 100);
+    mpz_class b(a); ASSERT_ALWAYS(b == 100);
+    mpz_clear(a);
+  }
+
+  // mpz_class(const mpz_class &)
+  {
+    mpz_class a(12345); // tested above, assume it works
+    mpz_class b(a); ASSERT_ALWAYS(b == 12345);
+  }
+
+  // no constructor for bool, but it gets casted to int
+  {
+    bool a = true;
+    mpz_class b(a); ASSERT_ALWAYS(b == 1);
+  }
+  {
+    bool a = false;
+    mpz_class b(a); ASSERT_ALWAYS(b == 0);
+  }
+}
+
+void
+check_mpq (void)
+{
+  // mpq_class()
+  {
+    mpq_class a; ASSERT_ALWAYS(a == 0);
+  }
+
+  // mpq_class(const mpq_class &)
+  // see below
+
+  // template <class T, class U> mpq_class(const __gmp_expr<T, U> &)
+  // not tested here, see t-unary.cc, t-binary.cc
+
+  // mpq_class(signed char)
+  {
+    signed char a = -127;
+    mpq_class b(a); ASSERT_ALWAYS(b == -127);
+  }
+
+  // mpq_class(unsigned char)
+  {
+    unsigned char a = 255;
+    mpq_class b(a); ASSERT_ALWAYS(b == 255);
+  }
+
+  // either signed or unsigned char, machine dependent
+  {
+    mpq_class a('A'); ASSERT_ALWAYS(a == 65);
+  }
+  {
+    mpq_class a('z'); ASSERT_ALWAYS(a == 122);
+  }
+
+  // mpq_class(signed int)
+  {
+    signed int a = 0;
+    mpq_class b(a); ASSERT_ALWAYS(b == 0);
+  }
+  {
+    signed int a = -123;
+    mpq_class b(a); ASSERT_ALWAYS(b == -123);
+  }
+  {
+    signed int a = 4567;
+    mpq_class b(a); ASSERT_ALWAYS(b == 4567);
+  }
+
+  // mpq_class(unsigned int)
+  {
+    unsigned int a = 890;
+    mpq_class b(a); ASSERT_ALWAYS(b == 890);
+  }
+
+  // mpq_class(signed short int)
+  {
+    signed short int a = -12345;
+    mpq_class b(a); ASSERT_ALWAYS(b == -12345);
+  }
+
+  // mpq_class(unsigned short int)
+  {
+    unsigned short int a = 54321u;
+    mpq_class b(a); ASSERT_ALWAYS(b == 54321u);
+  }
+
+  // mpq_class(signed long int)
+  {
+    signed long int a = -1234567890L;
+    mpq_class b(a); ASSERT_ALWAYS(b == -1234567890L);
+  }
+
+  // mpq_class(unsigned long int)
+  {
+    unsigned long int a = 1UL << 30;
+    mpq_class b(a); ASSERT_ALWAYS(b == 1073741824L);
+  }
+
+  // mpq_class(float)
+  {
+    float a = 0.625;
+    mpq_class b(a); ASSERT_ALWAYS(b == 0.625);
+  }
+
+  // mpq_class(double)
+  {
+    double a = 1.25;
+    mpq_class b(a); ASSERT_ALWAYS(b == 1.25);
+  }
+
+  // mpq_class(long double)
+  // currently not implemented
+
+  // mpq_class(const char *)
+  {
+    const char *a = "1234567890";
+    mpq_class b(a); ASSERT_ALWAYS(b == 1234567890L);
+  }
+
+  // mpq_class(const char *, int)
+  {
+    const char *a = "FFFF";
+    int base = 16;
+    mpq_class b(a, base); ASSERT_ALWAYS(b == 65535u);
+    mpq_class c(0, 1); ASSERT_ALWAYS(c == 0);
+  }
+
+  // mpq_class(const std::string &)
+  {
+    string a("1234567890");
+    mpq_class b(a); ASSERT_ALWAYS(b == 1234567890L);
+  }
+
+  // mpq_class(const std::string &, int)
+  {
+    string a("7777");
+    int base = 8;
+    mpq_class b(a, base); ASSERT_ALWAYS(b == 4095);
+  }
+
+  // mpq_class(const char *) with invalid
+  {
+    try {
+      const char *a = "abc";
+      mpq_class b(a);
+      ASSERT_ALWAYS (0);  /* should not be reached */
+    } catch (invalid_argument&) {
+    }
+  }
+
+  // mpq_class(const char *, int) with invalid
+  {
+    try {
+      const char *a = "ZZZ";
+      int base = 16;
+      mpq_class b (a, base);
+      ASSERT_ALWAYS (0);  /* should not be reached */
+    } catch (invalid_argument&) {
+    }
+  }
+
+  // mpq_class(const std::string &) with invalid
+  {
+    try {
+      string a("abc");
+      mpq_class b(a);
+      ASSERT_ALWAYS (0);  /* should not be reached */
+    } catch (invalid_argument&) {
+    }
+  }
+
+  // mpq_class(const std::string &, int) with invalid
+  {
+    try {
+      string a("ZZZ");
+      int base = 8;
+      mpq_class b (a, base);
+      ASSERT_ALWAYS (0);  /* should not be reached */
+    } catch (invalid_argument&) {
+    }
+  }
+
+  // mpq_class(mpq_srcptr)
+  {
+    mpq_t a;
+    mpq_init(a);
+    mpq_set_ui(a, 100, 1);
+    mpq_class b(a); ASSERT_ALWAYS(b == 100);
+    mpq_clear(a);
+  }
+
+  // mpq_class(const mpz_class &, const mpz_class &)
+  {
+    mpz_class a(123), b(4); // tested above, assume it works
+    mpq_class c(a, b); ASSERT_ALWAYS(c == 30.75);
+  }
+  {
+    mpz_class a(-1), b(2);  // tested above, assume it works
+    mpq_class c(a, b); ASSERT_ALWAYS(c == -0.5);
+  }
+  {
+    mpz_class a(5), b(4); // tested above, assume it works
+    mpq_class c(a, b); ASSERT_ALWAYS(c == 1.25);
+  }
+
+  // mpq_class(const mpz_class &)
+  {
+    mpq_class a(12345); // tested above, assume it works
+    mpq_class b(a); ASSERT_ALWAYS(b == 12345);
+  }
+
+  // no constructor for bool, but it gets casted to int
+  {
+    bool a = true;
+    mpq_class b(a); ASSERT_ALWAYS(b == 1);
+  }
+  {
+    bool a = false;
+    mpq_class b(a); ASSERT_ALWAYS(b == 0);
+  }
+}
+
+void
+check_mpf (void)
+{
+  // mpf_class()
+  {
+    mpf_class a; ASSERT_ALWAYS(a == 0);
+  }
+
+  // mpf_class(const mpf_class &)
+  // mpf_class(const mpf_class &, unsigned long int)
+  // see below
+
+  // template <class T, class U> mpf_class(const __gmp_expr<T, U> &)
+  // template <class T, class U> mpf_class(const __gmp_expr<T, U> &,
+  //                                       unsigned long int)
+  // not tested here, see t-unary.cc, t-binary.cc
+
+  // mpf_class(signed char)
+  {
+    signed char a = -127;
+    mpf_class b(a); ASSERT_ALWAYS(b == -127);
+  }
+
+  // mpf_class(signed char, unsigned long int)
+  {
+    signed char a = -1;
+    int prec = 64;
+    mpf_class b(a, prec); ASSERT_ALWAYS(b == -1);
+  }
+
+  // mpf_class(unsigned char)
+  {
+    unsigned char a = 255;
+    mpf_class b(a); ASSERT_ALWAYS(b == 255);
+  }
+
+  // mpf_class(unsigned char, unsigned long int)
+  {
+    unsigned char a = 128;
+    int prec = 128;
+    mpf_class b(a, prec); ASSERT_ALWAYS(b == 128);
+  }
+
+  // either signed or unsigned char, machine dependent
+  {
+    mpf_class a('A'); ASSERT_ALWAYS(a == 65);
+  }
+  {
+    int prec = 256;
+    mpf_class a('z', prec); ASSERT_ALWAYS(a == 122);
+  }
+
+  // mpf_class(signed int)
+  {
+    signed int a = 0;
+    mpf_class b(a); ASSERT_ALWAYS(b == 0);
+  }
+  {
+    signed int a = -123;
+    mpf_class b(a); ASSERT_ALWAYS(b == -123);
+  }
+  {
+    signed int a = 4567;
+    mpf_class b(a); ASSERT_ALWAYS(b == 4567);
+  }
+
+  // mpf_class(signed int, unsigned long int)
+  {
+    signed int a = -123;
+    int prec = 64;
+    mpf_class b(a, prec); ASSERT_ALWAYS(b == -123);
+  }
+
+  // mpf_class(unsigned int)
+  {
+    unsigned int a = 890;
+    mpf_class b(a); ASSERT_ALWAYS(b == 890);
+  }
+
+  // mpf_class(unsigned int, unsigned long int)
+  {
+    unsigned int a = 890;
+    int prec = 128;
+    mpf_class b(a, prec); ASSERT_ALWAYS(b == 890);
+  }
+
+  // mpf_class(signed short int)
+  {
+    signed short int a = -12345;
+    mpf_class b(a); ASSERT_ALWAYS(b == -12345);
+  }
+
+  // mpf_class(signed short int, unsigned long int)
+  {
+    signed short int a = 6789;
+    int prec = 256;
+    mpf_class b(a, prec); ASSERT_ALWAYS(b == 6789);
+  }
+
+  // mpf_class(unsigned short int)
+  {
+    unsigned short int a = 54321u;
+    mpf_class b(a); ASSERT_ALWAYS(b == 54321u);
+  }
+
+  // mpf_class(unsigned short int, unsigned long int)
+  {
+    unsigned short int a = 54321u;
+    int prec = 64;
+    mpf_class b(a, prec); ASSERT_ALWAYS(b == 54321u);
+  }
+
+  // mpf_class(signed long int)
+  {
+    signed long int a = -1234567890L;
+    mpf_class b(a); ASSERT_ALWAYS(b == -1234567890L);
+  }
+
+  // mpf_class(signed long int, unsigned long int)
+  {
+    signed long int a = -1234567890L;
+    int prec = 128;
+    mpf_class b(a, prec); ASSERT_ALWAYS(b == -1234567890L);
+  }
+
+  // mpf_class(unsigned long int)
+  {
+    unsigned long int a = 3456789012UL;
+    mpf_class b(a); ASSERT_ALWAYS(b == 3456789012UL);
+  }
+
+  // mpf_class(unsigned long int, unsigned long int)
+  {
+    unsigned long int a = 3456789012UL;
+    int prec = 256;
+    mpf_class b(a, prec); ASSERT_ALWAYS(b == 3456789012UL);
+  }
+
+  // mpf_class(float)
+  {
+    float a = 1234.5;
+    mpf_class b(a); ASSERT_ALWAYS(b == 1234.5);
+  }
+
+  // mpf_class(float, unsigned long int)
+  {
+    float a = 1234.5;
+    int prec = 64;
+    mpf_class b(a, prec); ASSERT_ALWAYS(b == 1234.5);
+  }
+
+  // mpf_class(double)
+  {
+    double a = 12345.0;
+    mpf_class b(a); ASSERT_ALWAYS(b == 12345);
+  }
+  {
+    double a = 1.2345e+4;
+    mpf_class b(a); ASSERT_ALWAYS(b == 12345);
+  }
+  {
+    double a = 312.5e-2;
+    mpf_class b(a); ASSERT_ALWAYS(b == 3.125);
+  }
+
+  // mpf_class(double, unsigned long int)
+  {
+    double a = 5.4321e+4;
+    int prec = 128;
+    mpf_class b(a, prec); ASSERT_ALWAYS(b == 54321L);
+  }
+
+  // mpf_class(long double)
+  // mpf_class(long double, unsigned long int)
+  // currently not implemented
+
+  // mpf_class(const char *)
+  {
+    const char *a = "1234567890";
+    mpf_class b(a); ASSERT_ALWAYS(b == 1234567890L);
+  }
+
+  // mpf_class(const char *, unsigned long int, int = 0)
+  {
+    const char *a = "1234567890";
+    int prec = 256;
+    mpf_class b(a, prec); ASSERT_ALWAYS(b == 1234567890L);
+  }
+  {
+    const char *a = "777777";
+    int prec = 64, base = 8;
+    mpf_class b(a, prec, base); ASSERT_ALWAYS(b == 262143L);
+  }
+
+  // mpf_class(const std::string &)
+  {
+    string a("1234567890");
+    mpf_class b(a); ASSERT_ALWAYS(b == 1234567890L);
+  }
+
+  // mpf_class(const std::string &, unsigned long int, int = 0)
+  {
+    string a("1234567890");
+    int prec = 128;
+    mpf_class b(a, prec); ASSERT_ALWAYS(b == 1234567890L);
+  }
+  {
+    string a("FFFF");
+    int prec = 256, base = 16;
+    mpf_class b(a, prec, base); ASSERT_ALWAYS(b == 65535u);
+  }
+
+  // mpf_class(const char *) with invalid
+  {
+    try {
+      const char *a = "abc";
+      mpf_class b(a);
+      ASSERT_ALWAYS (0);  /* should not be reached */
+    } catch (invalid_argument&) {
+    }
+  }
+
+  // mpf_class(const char *, unsigned long int, int = 0) with invalid
+  {
+    try {
+      const char *a = "def";
+      int prec = 256;
+      mpf_class b(a, prec); ASSERT_ALWAYS(b == 1234567890L);
+      ASSERT_ALWAYS (0);  /* should not be reached */
+    } catch (invalid_argument&) {
+    }
+  }
+  {
+    try {
+      const char *a = "ghi";
+      int prec = 64, base = 8;
+      mpf_class b(a, prec, base); ASSERT_ALWAYS(b == 262143L);
+      ASSERT_ALWAYS (0);  /* should not be reached */
+    } catch (invalid_argument&) {
+    }
+  }
+
+  // mpf_class(const std::string &) with invalid
+  {
+    try {
+      string a("abc");
+      mpf_class b(a); ASSERT_ALWAYS(b == 1234567890L);
+      ASSERT_ALWAYS (0);  /* should not be reached */
+    } catch (invalid_argument&) {
+    }
+  }
+
+  // mpf_class(const std::string &, unsigned long int, int = 0) with invalid
+  {
+    try {
+      string a("def");
+      int prec = 128;
+      mpf_class b(a, prec); ASSERT_ALWAYS(b == 1234567890L);
+      ASSERT_ALWAYS (0);  /* should not be reached */
+    } catch (invalid_argument&) {
+    }
+  }
+  {
+    try {
+      string a("ghi");
+      int prec = 256, base = 16;
+      mpf_class b(a, prec, base); ASSERT_ALWAYS(b == 65535u);
+      ASSERT_ALWAYS (0);  /* should not be reached */
+    } catch (invalid_argument&) {
+    }
+  }
+
+  // mpf_class(mpf_srcptr)
+  {
+    mpf_t a;
+    mpf_init_set_ui(a, 100);
+    mpf_class b(a); ASSERT_ALWAYS(b == 100);
+    mpf_clear(a);
+  }
+
+  // mpf_class(mpf_srcptr, unsigned long int)
+  {
+    mpf_t a;
+    int prec = 64;
+    mpf_init_set_ui(a, 100);
+    mpf_class b(a, prec); ASSERT_ALWAYS(b == 100);
+    mpf_clear(a);
+  }
+
+  // mpf_class(const mpf_class &)
+  {
+    mpf_class a(12345); // tested above, assume it works
+    mpf_class b(a); ASSERT_ALWAYS(b == 12345);
+  }
+
+  // mpf_class(const mpf_class &, unsigned long int)
+  {
+    mpf_class a(12345); // tested above, assume it works
+    int prec = 64;
+    mpf_class b(a, prec); ASSERT_ALWAYS(b == 12345);
+  }
+
+  // no constructors for bool, but it gets casted to int
+  {
+    bool a = true;
+    mpf_class b(a); ASSERT_ALWAYS(b == 1);
+  }
+  {
+    bool a = false;
+    mpf_class b(a); ASSERT_ALWAYS(b == 0);
+  }
+  {
+    bool a = true;
+    int prec = 128;
+    mpf_class b(a, prec); ASSERT_ALWAYS(b == 1);
+  }
+  {
+    bool a = false;
+    int prec = 256;
+    mpf_class b(a, prec); ASSERT_ALWAYS(b == 0);
+  }
+}
+
+
+int
+main (void)
+{
+  tests_start();
+
+  check_mpz();
+  check_mpq();
+  check_mpf();
+
+  tests_end();
+  return 0;
+}