/*++ Copyright (c) 2012 Microsoft Corporation Module Name: mpfx.cpp Abstract: Multi precision fixed point numbers. Author: Leonardo de Moura (leonardo) 2012-09-19 Revision History: --*/ #include"mpfx.h" static void tst1() { mpfx_manager m; scoped_mpfx a(m), b(m), c(m); m.set(a, 1); m.set(b, 2); std::cout << a << " + " << b << " == " << (a+b) << "\n"; m.set(a, 5); m.set(c, 3); m.display_raw(std::cout, (a*a*b)/c); std::cout << "\n"; m.display_decimal(std::cout, (a*a*b)/c); std::cout << "\n"; m.display_decimal(std::cout, (a*a*b)/c, 10); std::cout << "\n"; m.round_to_plus_inf(); m.display_decimal(std::cout, (a*a*b)/c); std::cout << "\n"; m.set(a, -1, 4); m.display_decimal(std::cout, a); std::cout << "\n"; } static void tst_prev_power_2(int64 n, uint64 d, unsigned expected) { mpfx_manager m; scoped_mpfx a(m); m.set(a, n, d); SASSERT(m.prev_power_of_two(a) == expected); } static void tst_prev_power_2() { tst_prev_power_2(-10, 1, 0); tst_prev_power_2(0, 1, 0); tst_prev_power_2(1, 1, 0); tst_prev_power_2(2, 1, 1); tst_prev_power_2(3, 1, 1); tst_prev_power_2(4, 1, 2); tst_prev_power_2(5, 1, 2); tst_prev_power_2(8, 1, 3); tst_prev_power_2(9, 1, 3); tst_prev_power_2(9, 2, 2); tst_prev_power_2(9, 4, 1); tst_prev_power_2(9, 5, 0); tst_prev_power_2((1ll << 60) + 1, 1, 60); tst_prev_power_2((1ll << 60), 1, 60); tst_prev_power_2((1ll << 60) - 1, 1, 59); tst_prev_power_2((1ll << 60), 3, 58); } void tst_mpfx() { tst_prev_power_2(); tst1(); }