diff options
| -rw-r--r-- | libstdc++-v3/ChangeLog | 9 | ||||
| -rw-r--r-- | libstdc++-v3/include/c_std/std_cmath.h | 6 | ||||
| -rw-r--r-- | libstdc++-v3/testsuite/26_numerics/cmath/powi.cc | 64 |
3 files changed, 76 insertions, 3 deletions
diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog index 27bf800..6d3eea2 100644 --- a/libstdc++-v3/ChangeLog +++ b/libstdc++-v3/ChangeLog @@ -1,3 +1,12 @@ +2005-02-13 Richard Guenther <rguenth@gcc.gnu.org> + Paolo Carlini <pcarlini@suse.de> + + PR libstdc++/11706 + * include/c_std/std_cmath.h (pow): Use __builtin_powi[lf] + for integer overloads. + + * testsuite/26_numerics/cmath/powi.cc: New. + 2005-02-11 Janis Johnson <janis187@us.ibm.com> * testsuite/26_numerics/complex/13450.cc: Fix XFAIL selector. diff --git a/libstdc++-v3/include/c_std/std_cmath.h b/libstdc++-v3/include/c_std/std_cmath.h index 5aefe0f..1dd6c73 100644 --- a/libstdc++-v3/include/c_std/std_cmath.h +++ b/libstdc++-v3/include/c_std/std_cmath.h @@ -350,15 +350,15 @@ namespace std inline double pow(double __x, int __i) - { return __pow_helper(__x, __i); } + { return __builtin_powi(__x, __i); } inline float pow(float __x, int __n) - { return __pow_helper(__x, __n); } + { return __builtin_powif(__x, __n); } inline long double pow(long double __x, int __n) - { return __pow_helper(__x, __n); } + { return __builtin_powil(__x, __n); } using ::sin; diff --git a/libstdc++-v3/testsuite/26_numerics/cmath/powi.cc b/libstdc++-v3/testsuite/26_numerics/cmath/powi.cc new file mode 100644 index 0000000..588448c --- /dev/null +++ b/libstdc++-v3/testsuite/26_numerics/cmath/powi.cc @@ -0,0 +1,64 @@ +// 2005-02-13 Paolo Carlini <pcarlini@suse.de> + +// Copyright (C) 2005 Free Software Foundation +// +// 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 2, 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 COPYING. If not, write to the Free +// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, +// USA. + +// 26.5 C Library + +#include <cmath> +#include <testsuite_hooks.h> + +template<typename T> + void test01_do() + { + using namespace std; + bool test __attribute__((unused)) = true; + + VERIFY( pow(T(1.0), 0) == T(1.0) ); + VERIFY( pow(T(2.0), 0) == T(1.0) ); + VERIFY( pow(T(-1.0), 0) == T(1.0) ); + VERIFY( pow(T(-4.0), 0) == T(1.0) ); + + VERIFY( pow(T(1.0), 1) == T(1.0) ); + VERIFY( pow(T(2.0), 1) == T(2.0) ); + VERIFY( pow(T(-1.0), 1) == T(-1.0) ); + VERIFY( pow(T(-4.0), 1) == T(-4.0) ); + + VERIFY( pow(T(1.0), -1) == T(1.0) / T(1.0) ); + VERIFY( pow(T(2.0), -1) == T(1.0) / T(2.0) ); + VERIFY( pow(T(-1.0), -1) == T(1.0) / T(-1.0) ); + VERIFY( pow(T(-4.0), -1) == T(1.0) / T(-4.0) ); + + VERIFY( pow(T(1.0), 2) == T(1.0) * T(1.0) ); + VERIFY( pow(T(2.0), 2) == T(2.0) * T(2.0) ); + VERIFY( pow(T(-1.0), 2) == T(-1.0) * T(-1.0) ); + VERIFY( pow(T(-4.0), 2) == T(-4.0) * T(-4.0) ); + } + +void test01() +{ + test01_do<float>(); + test01_do<double>(); + test01_do<long double>(); +} + +int main() +{ + test01(); + return 0; +} |