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73 lines
2.4 KiB
C++
73 lines
2.4 KiB
C++
/*++
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Copyright (c) 2012 Microsoft Corporation
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Module Name:
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im_float_config.h
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Abstract:
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Auxiliary class for testing intervals with software floats end points.
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Author:
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Leonardo de Moura (leonardo) 2012-08-21.
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Revision History:
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--*/
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#ifndef _IM_FLOAT_CONFIG_H_
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#define _IM_FLOAT_CONFIG_H_
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#include"f2n.h"
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#include"mpf.h"
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#include"hwf.h"
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template<typename f_manager>
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class im_float_config {
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f2n<f_manager> m_manager;
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public:
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typedef f2n<f_manager> numeral_manager;
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typedef typename f_manager::numeral numeral;
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im_float_config(f_manager & m, unsigned ebits = 11, unsigned sbits = 53):m_manager(m, ebits, sbits) {}
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struct interval {
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numeral m_lower;
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numeral m_upper;
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};
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void round_to_minus_inf() { m_manager.round_to_minus_inf(); }
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void round_to_plus_inf() { m_manager.round_to_plus_inf(); }
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void set_rounding(bool up) { m_manager.set_rounding(up); }
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// Getters
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numeral const & lower(interval const & a) const { return a.m_lower; }
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numeral const & upper(interval const & a) const { return a.m_upper; }
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numeral & lower(interval & a) { return a.m_lower; }
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numeral & upper(interval & a) { return a.m_upper; }
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bool lower_is_inf(interval const & a) const { return m_manager.m().is_ninf(a.m_lower); }
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bool upper_is_inf(interval const & a) const { return m_manager.m().is_pinf(a.m_upper); }
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bool lower_is_open(interval const & a) const { return lower_is_inf(a); }
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bool upper_is_open(interval const & a) const { return upper_is_inf(a); }
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// Setters
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void set_lower(interval & a, numeral const & n) { m_manager.set(a.m_lower, n); }
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void set_upper(interval & a, numeral const & n) { m_manager.set(a.m_upper, n); }
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void set_lower_is_open(interval & a, bool v) {}
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void set_upper_is_open(interval & a, bool v) {}
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void set_lower_is_inf(interval & a, bool v) { if (v) m_manager.m().mk_ninf(m_manager.ebits(), m_manager.sbits(), a.m_lower); }
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void set_upper_is_inf(interval & a, bool v) { if (v) m_manager.m().mk_pinf(m_manager.ebits(), m_manager.sbits(), a.m_upper); }
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// Reference to numeral manager
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numeral_manager & m() const { return const_cast<numeral_manager&>(m_manager); }
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};
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template<typename fmanager>
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inline void del_f_interval(im_float_config<fmanager> & cfg, typename im_float_config<fmanager>::interval & a) {
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cfg.m().del(a.m_lower);
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cfg.m().del(a.m_upper);
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}
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#endif
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