// Copyright (C) 2009 Free Software Foundation, Inc. // // This file is part of the GNU ISO C++ Library. This library 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, or (at your option) // any later version. // This 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 a copy of the GNU General Public License along // with this library; see the file COPYING3. If not see // . // { dg-require-effective-target dfp } // ISO/IEC TR 24733 3.2.2.2 Conversion from floating-point type (decimal32). // ISO/IEC TR 24733 3.2.3.2 Conversion from floating-point type (decimal64). // ISO/IEC TR 24733 3.2.4.2 Conversion from floating-point type (decimal128). #include #include using namespace std::decimal; void conversion_from_float_32 () { decimal32 d32(123); decimal64 d64(234); decimal128 d128(345); float f = 456.F; double d = 567.; long double ld = 678.L; d32 = (decimal32) d64; VERIFY (d32 == make_decimal32 (234LL, 0)); d32 = (decimal32) d128; VERIFY (d32 == make_decimal32 (345LL, 0)); d32 = (decimal32) f; VERIFY (d32 == make_decimal32 (456LL, 0)); d32 = (decimal32) d; VERIFY (d32 == make_decimal32 (567LL, 0)); d32 = (decimal32) ld; VERIFY (d32 == make_decimal32 (678LL, 0)); } void conversion_from_float_64 () { decimal32 d32(123); decimal64 d64(234); decimal128 d128(345); float f = 456.F; double d = 567.; long double ld = 678.L; d64 = d32; VERIFY (d64 == make_decimal64 (123LL, 0)); d64 = (decimal64) d128; VERIFY (d64 == make_decimal64 (345LL, 0)); d64 = (decimal64) f; VERIFY (d64 == make_decimal64 (456LL, 0)); d64 = (decimal64) d; VERIFY (d64 == make_decimal64 (567LL, 0)); d64 = (decimal64) ld; VERIFY (d64 == make_decimal64 (678LL, 0)); } void conversion_from_float_128 () { decimal32 d32(123); decimal64 d64(234); decimal128 d128(345); float f = 456.F; double d = 567.; long double ld = 678.L; d128 = d32; VERIFY (d128 == make_decimal128 (123LL, 0)); d128 = d64; VERIFY (d128 == make_decimal128 (234LL, 0)); d128 = (decimal128) f; VERIFY (d128 == make_decimal128 (456LL, 0)); d128 = (decimal128) d; VERIFY (d128 == make_decimal128 (567LL, 0)); d128 = (decimal128) ld; VERIFY (d128 == make_decimal128 (678LL, 0)); } int main () { conversion_from_float_32 (); conversion_from_float_64 (); conversion_from_float_128 (); }