UT_MatrixShared.h

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/*
 * PROPRIETARY INFORMATION.  This software is proprietary to
 * Side Effects Software Inc., and is not to be reproduced,
 * transmitted, or disclosed in any way without written permission.
 *
 */

#pragma once

#ifndef __UT_MATRIXSHARED_H_INCLUDED__
#define __UT_MATRIXSHARED_H_INCLUDED__

#include <SYS/SYS_Math.h>
#include <SYS/SYS_Types.h>

// refactored from OP_Node.C
namespace
{
    template <typename T>
    struct ut_MinAbsScale;

    template <>
    struct ut_MinAbsScale<fpreal32>
    {
        static inline fpreal32 value() { return SYS_FTOLERANCE; }
    };
    template <>
    struct ut_MinAbsScale<fpreal64>
    {
        static inline fpreal64 value() { return 1e-14; }
    };

}

template <typename T>
static inline T
UTconditionScale(T f)
{
    if (SYSabs(f) < ut_MinAbsScale<T>::value())
    {
        f = f < 0 ? -ut_MinAbsScale<T>::value()
                  : +ut_MinAbsScale<T>::value();
    }
    return f;
}

#endif // __UT_MATRIXSHARED_H_INCLUDED__