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libsst/Lib/Include/CML/quaternion.h
2026-04-03 00:22:39 -05:00

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/* -*- C++ -*- ------------------------------------------------------------
Copyright (c) 2007 Jesse Anders and Demian Nave http://cmldev.net/
The Configurable Math Library (CML) is distributed under the terms of the
Boost Software License, v1.0 (see cml/LICENSE for details).
*-----------------------------------------------------------------------*/
/** @file
* @brief
*/
#ifndef cml_quaternion_h
#define cml_quaternion_h
#include <cml/core/common.h>
namespace cml {
// NOTE: 'scale' constant no longer used.
/** Helper to specify v1^v2 multiplication order. */
struct positive_cross {
/*enum { scale = 1 };*/
};
/** Helper to specify v2^v1 multiplication order. */
struct negative_cross {
/*enum { scale = -1 };*/
};
/** Helper to specify scalar-first quaternion ordering. */
struct scalar_first {
enum { W, X, Y, Z };
};
/** Helper to specify vector-first quaternion ordering. */
struct vector_first {
enum { X, Y, Z, W };
};
/** A configurable quaternion.
*
* This class encapsulates the notion of a quaternion. The ArrayType
* template argument can be used to select the type of array to be used as
* internal storage for the quaternion's coefficients.
*
* @note Quaternions with two different orders cannot be used in the same
* expression.
*/
template<typename Element, class ArrayType = fixed<>,
class Order = scalar_first, class Cross = positive_cross> class quaternion;
} // namespace cml
#include <cml/quaternion/quaternion_ops.h>
#include <cml/quaternion/conjugate.h>
#include <cml/quaternion/quaternion_mul.h>
#include <cml/quaternion/quaternion_functions.h>
#include <cml/quaternion/quaternion_comparison.h>
#include <cml/quaternion/inverse.h>
#include <cml/quaternion/quaternion.h>
#include <cml/quaternion/quaternion_print.h>
#endif
// -------------------------------------------------------------------------
// vim:ft=cpp