55 lines
1.6 KiB
C++
55 lines
1.6 KiB
C++
/** @file DFloat.hpp
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*
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* @author Roland Conybeare, Dec 2025
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**/
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#pragma once
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#include <xo/alloc2/Allocator.hpp>
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#include <xo/alloc2/Collector.hpp>
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#include <xo/facet/obj.hpp>
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#include <xo/indentlog/print/ppindentinfo.hpp>
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namespace xo {
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namespace scm {
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struct DFloat {
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using AAllocator = xo::mm::AAllocator;
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using ACollector = xo::mm::ACollector;
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using ppindentinfo = xo::print::ppindentinfo;
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using value_type = double;
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explicit DFloat(double x) : value_{x} {}
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/** probably want default = ANumeric, once we introduce it **/
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template <typename AFacet>
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static obj<AFacet,DFloat> box(obj<AAllocator> mm, double x);
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/** allocate boxed value @p x using memory from @p mm **/
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static DFloat * _box(obj<AAllocator> mm, double x);
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double value() const noexcept { return value_; }
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operator double() const noexcept { return value_; }
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bool pretty(const ppindentinfo & ppii) const;
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// GCObject facet
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std::size_t shallow_size() const noexcept;
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DFloat * shallow_copy(obj<AAllocator> mm) const noexcept;
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std::size_t forward_children(obj<ACollector> gc) noexcept;
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private:
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/** boxed floating-oint value **/
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double value_;
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};
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template <typename AFacet>
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obj<AFacet,DFloat>
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DFloat::box(obj<AAllocator> mm, double x) {
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return obj<AFacet,DFloat>(DFloat::_box(mm, x));
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}
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} /*nmaespace scm*/
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} /*namespace xo*/
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/* end DFloat.hpp */
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