extended< NT_ > Struct Template Reference

#include <extended.hpp>

List of all members.

Public Types

• typedef NT_ NT
• typedef scalar< NT > T
• typedef extended< NT > Self

Public Member Functions

• extended ()
• extended (const T &a_)
• extended (const T &a_, const T &b_, const T &c_)

Static Public Member Functions

• static int signof (const T &x)
• static int compare (const Self &lhs, const Self &rhs)

Public Attributes

• T a
• T b
• T c

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Detailed Description

template<class NT_>
struct mmx::extended< NT_ >

Definition at line 25 of file extended.hpp.

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Member Typedef Documentation

typedef NT_ NT

Definition at line 29 of file extended.hpp.

typedef extended<NT> Self

Definition at line 31 of file extended.hpp.

typedef scalar<NT> T

Definition at line 30 of file extended.hpp.

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Constructor & Destructor Documentation

extended

(

)

[inline]

Definition at line 35 of file extended.hpp.

    {
    }

extended

(

const T &

a_

)

[inline]

Definition at line 39 of file extended.hpp.

        : a(a_),
          b(T(0)),
          c(T(0))
    {
    }

extended	(	const T &	a_,
		const T &	b_,
		const T &	c_
	)			[inline]

Definition at line 46 of file extended.hpp.

        : a(a_),
          b(b_),
          c(c_)
    {
    }

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Member Function Documentation

static int compare	(	const Self &	lhs,
		const Self &	rhs
	)			[inline, static]

Definition at line 63 of file extended.hpp.

References extended< NT_ >::a, extended< NT_ >::b, extended< NT_ >::c, extended_check, and extended< NT_ >::signof().

Referenced by mmx::compare(), mmx::operator<(), mmx::operator<=(), mmx::operator>(), and mmx::operator>=().

    {
        extended_check(lhs, rhs);
        Self delta = lhs - rhs;
        // equal
        if (delta.a == 0 && delta.b == 0) return 0;
        // simple
        if (delta.a == 0) return signof(delta.b);
        if (delta.b == 0) return signof(delta.a);
        // less
        if (delta.a < 0 && delta.b < 0) return -1;
        // greater
        if (delta.a > 0 && delta.b > 0) return 1;
        // less or greater, but mixed signs
        T aa = delta.a * delta.a;
        T bbc = delta.b * delta.b * delta.c;
        if (aa > bbc)
            return signof(delta.a);
        else
            return signof(delta.b);
        return 0;
    }

static int signof

(

const T &

x

)

[inline, static]

Definition at line 53 of file extended.hpp.

Referenced by extended< NT_ >::compare().

    {
        if (x > 0)
            return 1;
        else if (x < 0)
            return -1;
        else
            return 0;
    }

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Member Data Documentation

T a

Definition at line 33 of file extended.hpp.

Referenced by mmx::bit_size(), extended< NT_ >::compare(), mmx::operator*(), mmx::operator+(), mmx::operator-(), mmx::operator/(), mmx::operator<<(), mmx::operator<<=(), mmx::operator==(), and mmx::print().

T b

Definition at line 33 of file extended.hpp.

Referenced by mmx::bit_size(), extended< NT_ >::compare(), mmx::operator*(), mmx::operator+(), mmx::operator-(), mmx::operator/(), mmx::operator<<(), mmx::operator==(), and mmx::print().

T c

Definition at line 33 of file extended.hpp.

Referenced by extended< NT_ >::compare(), mmx::operator*(), mmx::operator-(), mmx::operator/(), and mmx::print().

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The documentation for this struct was generated from the following file:

• include/realroot/extended.hpp