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tjp/core/math/Real.inl

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+//
+//  Math.inl
+//  amoeba
+//
+//  Created by Timothy Prepscius on 12/30/16.
+//  Copyright © 2016 Timothy Prepscius. All rights reserved.
+//
+
+// inline
+
+#pragma once
+
+#include "Real.hpp"
+
+#include <cmath>
+#include <algorithm>
+
+namespace tjp {
+namespace core {
+namespace math {
+
+template<typename T>
+T clamp(const T &t, T l=0, T r=1)
+{
+	return std::min(std::max(t, l), r);
+}
+
+template<typename Real>
+Real ceil(const Real &r)
+{
+	return std::ceil(r);
+}
+
+template<typename Real>
+Real floor(const Real &r)
+{
+	return std::floor(r);
+}
+
+template<typename Real>
+Real trunc(const Real &r)
+{
+	return std::trunc(r);
+}
+
+
+template<typename Real>
+Real pow2(const Real &r)
+{
+	return r*r;
+}
+
+template<typename Real>
+Real min_value(const Real &lhs, const Real &rhs)
+{
+	if (lhs < rhs)
+		return lhs;
+		
+	return rhs;
+}
+
+template<typename Real>
+Real max_value(const Real &lhs, const Real &rhs)
+{
+	if (lhs > rhs)
+		return lhs;
+		
+	return rhs;
+}
+
+
+template<typename Real>
+Real sign_of(const Real & a)
+{
+	if (a < 0)
+		return (Real)-1;
+		
+	return 1;
+}
+
+template<typename Real>
+Real abs(const Real & a)
+{
+	return std::abs(a);
+}
+
+template<typename Real>
+Real sin(const Real & a)
+{
+	return std::sin(a);
+}
+
+// inline
+template<typename Real>
+Real cos(const Real & a)
+{
+	return std::cos(a);
+}
+
+// inline
+template<typename Real>
+Real sqrt(const Real &v)
+{
+	return std::sqrt(v);
+}
+
+// inline
+template<typename Real>
+Real acos(const Real & v)
+{
+	return std::acos(v);
+}
+
+// inline
+template<typename Real>
+Real atan(const Real & v)
+{
+	return std::atan(v);
+}
+
+// inline
+template<typename Real>
+Real atan2(const Real & v, const Real & e)
+{
+	return std::atan2(v, e);
+}
+
+
+// inline
+template<typename Real>
+Real hypot(const Real & v, const Real & e)
+{
+	return std::hypot(v, e);
+}
+
+template<typename Real>
+Real length(const Real & r)
+{
+	return abs(r);
+}
+
+template<typename Real>
+Real lengthSquared(Real r)
+{
+	return r*r;
+}
+
+// ----
+
+template<>
+inline
+u128 abs(const u128 &v)
+{
+	return v;
+}
+
+template<>
+inline
+s128 abs(const s128 &v)
+{
+	return v >= 0 ? v : -v;
+}
+
+
+template<typename Real>
+Real fract(Real r)
+{
+	Real _;
+	return std::modf(r, &_);
+}
+
+} // namespace
+} // namespace
+} // namespace