Module: ppl/ppl Branch: bounded_arithmetic Commit: ca38275a5e16241fe45be2193cf78c4e987a501f URL: http://www.cs.unipr.it/git/gitweb.cgi?p=ppl/ppl.git;a=commit;h=ca38275a5e162...

Author: Abramo Bagnara abramo.bagnara@gmail.com Date: Tue May 12 17:30:01 2009 +0200

Added smod_2exp and umod_2exp for boundary.

---

src/Boundary.defs.hh | 36 ++++++++++++++++++++++++++++++++++++ 1 files changed, 36 insertions(+), 0 deletions(-)

diff --git a/src/Boundary.defs.hh b/src/Boundary.defs.hh index 29a76e9..90deaa8 100644 --- a/src/Boundary.defs.hh +++ b/src/Boundary.defs.hh @@ -725,6 +725,42 @@ div_assign_z(Boundary_Type to_type, To& to, To_Info& to_info, } }

+template <typename To, typename To_Info, typename T, typename Info> +inline Result +umod_2exp_assign(Boundary_Type to_type, To& to, To_Info& to_info, + Boundary_Type type, const T& x, const Info& info, + unsigned int exp) { + assert(to_type != type); + bool shrink; + if (is_boundary_infinity(type, x, info)) { + shrink = boundary_infinity_is_open(type, info); + return set_boundary_infinity(to_type, to, to_info, shrink); + } + shrink = normal_is_open(type, x, info); + bool check = (To_Info::check_inexact + || (!shrink && (To_Info::store_open || to_info.has_restriction()))); + Result r = umod_2exp_assign_r(to, x, exp, round_dir_check(to_type, check)); + return adjust_boundary(to_type, to, to_info, shrink, r); +} + +template <typename To, typename To_Info, typename T, typename Info> +inline Result +smod_2exp_assign(Boundary_Type to_type, To& to, To_Info& to_info, + Boundary_Type type, const T& x, const Info& info, + unsigned int exp) { + assert(to_type != type); + bool shrink; + if (is_boundary_infinity(type, x, info)) { + shrink = boundary_infinity_is_open(type, info); + return set_boundary_infinity(to_type, to, to_info, shrink); + } + shrink = normal_is_open(type, x, info); + bool check = (To_Info::check_inexact + || (!shrink && (To_Info::store_open || to_info.has_restriction()))); + Result r = smod_2exp_assign_r(to, x, exp, round_dir_check(to_type, check)); + return adjust_boundary(to_type, to, to_info, shrink, r); +} + } // namespace Boundary_NS

} // namespace Parma_Polyhedra_Library