Added matrix relationak function taking ULPs

glm/ext/matrix_relational.hpp

@@ -36,6 +36,16 @@ namespace glm
 	template<length_t C, length_t R, typename T, qualifier Q>
 	GLM_FUNC_DECL GLM_CONSTEXPR vec<C, bool, Q> equal(mat<C, R, T, Q> const& x, mat<C, R, T, Q> const& y);
 
+	/// Perform a component-wise not-equal-to comparison of two matrices.
+	/// Return a boolean vector which components value is True if this expression is satisfied per column of the matrices.
+	///
+	/// @tparam C Integer between 1 and 4 included that qualify the number of columns of the matrix
+	/// @tparam R Integer between 1 and 4 included that qualify the number of rows of the matrix
+	/// @tparam T Floating-point or integer scalar types
+	/// @tparam Q Value from qualifier enum
+	template<length_t C, length_t R, typename T, qualifier Q>
+	GLM_FUNC_DECL GLM_CONSTEXPR vec<C, bool, Q> notEqual(mat<C, R, T, Q> const& x, mat<C, R, T, Q> const& y);
+
 	/// Returns the component-wise comparison of |x - y| < epsilon.
 	/// True if this expression is satisfied.
 	///
@@ -56,16 +66,6 @@ namespace glm
 	template<length_t C, length_t R, typename T, qualifier Q>
 	GLM_FUNC_DECL GLM_CONSTEXPR vec<C, bool, Q> equal(mat<C, R, T, Q> const& x, mat<C, R, T, Q> const& y, vec<C, T, Q> const& epsilon);
 
-	/// Perform a component-wise not-equal-to comparison of two matrices.
-	/// Return a boolean vector which components value is True if this expression is satisfied per column of the matrices.
-	///
-	/// @tparam C Integer between 1 and 4 included that qualify the number of columns of the matrix
-	/// @tparam R Integer between 1 and 4 included that qualify the number of rows of the matrix
-	/// @tparam T Floating-point or integer scalar types
-	/// @tparam Q Value from qualifier enum
-	template<length_t C, length_t R, typename T, qualifier Q>
-	GLM_FUNC_DECL GLM_CONSTEXPR vec<C, bool, Q> notEqual(mat<C, R, T, Q> const& x, mat<C, R, T, Q> const& y);
-
 	/// Returns the component-wise comparison of |x - y| < epsilon.
 	/// True if this expression is not satisfied.
 	///
@@ -86,6 +86,46 @@ namespace glm
 	template<length_t C, length_t R, typename T, qualifier Q>
 	GLM_FUNC_DECL GLM_CONSTEXPR vec<C, bool, Q> notEqual(mat<C, R, T, Q> const& x, mat<C, R, T, Q> const& y, vec<C, T, Q> const& epsilon);
 
+	/// Returns the component-wise comparison between two vectors in term of ULPs.
+	/// True if this expression is satisfied.
+	///
+	/// @tparam C Integer between 1 and 4 included that qualify the number of columns of the matrix
+	/// @tparam R Integer between 1 and 4 included that qualify the number of rows of the matrix
+	/// @tparam T Floating-point
+	/// @tparam Q Value from qualifier enum
+	template<length_t C, length_t R, typename T, qualifier Q>
+	GLM_FUNC_DECL GLM_CONSTEXPR vec<C, bool, Q> equal(mat<C, R, T, Q> const& x, mat<C, R, T, Q> const& y, int ULPs);
+
+	/// Returns the component-wise comparison between two vectors in term of ULPs.
+	/// True if this expression is satisfied.
+	///
+	/// @tparam C Integer between 1 and 4 included that qualify the number of columns of the matrix
+	/// @tparam R Integer between 1 and 4 included that qualify the number of rows of the matrix
+	/// @tparam T Floating-point
+	/// @tparam Q Value from qualifier enum
+	template<length_t C, length_t R, typename T, qualifier Q>
+	GLM_FUNC_DECL GLM_CONSTEXPR vec<C, bool, Q> equal(mat<C, R, T, Q> const& x, mat<C, R, T, Q> const& y, vec<C, int, Q> const& ULPs);
+
+	/// Returns the component-wise comparison between two vectors in term of ULPs.
+	/// True if this expression is not satisfied.
+	///
+	/// @tparam C Integer between 1 and 4 included that qualify the number of columns of the matrix
+	/// @tparam R Integer between 1 and 4 included that qualify the number of rows of the matrix
+	/// @tparam T Floating-point
+	/// @tparam Q Value from qualifier enum
+	template<length_t C, length_t R, typename T, qualifier Q>
+	GLM_FUNC_DECL GLM_CONSTEXPR vec<C, bool, Q> notEqual(mat<C, R, T, Q> const& x, mat<C, R, T, Q> const& y, int ULPs);
+
+	/// Returns the component-wise comparison between two vectors in term of ULPs.
+	/// True if this expression is not satisfied.
+	///
+	/// @tparam C Integer between 1 and 4 included that qualify the number of columns of the matrix
+	/// @tparam R Integer between 1 and 4 included that qualify the number of rows of the matrix
+	/// @tparam T Floating-point
+	/// @tparam Q Value from qualifier enum
+	template<length_t C, length_t R, typename T, qualifier Q>
+	GLM_FUNC_DECL GLM_CONSTEXPR vec<C, bool, Q> notEqual(mat<C, R, T, Q> const& x, mat<C, R, T, Q> const& y, vec<C, int, Q> const& ULPs);
+
 	/// @}
 }//namespace glm
 

glm/ext/matrix_relational.inl

@@ -48,4 +48,35 @@ namespace glm
 			Result[i] = any(notEqual(a[i], b[i], Epsilon[i]));
 		return Result;
 	}
+
+	template<length_t C, length_t R, typename T, qualifier Q>
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<C, bool, Q> equal(mat<C, R, T, Q> const& a, mat<C, R, T, Q> const& b, int MaxULPs)
+	{
+		return equal(a, b, vec<C, int, Q>(MaxULPs));
+	}
+
+	template<length_t C, length_t R, typename T, qualifier Q>
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<C, bool, Q> equal(mat<C, R, T, Q> const& a, mat<C, R, T, Q> const& b, vec<C, int, Q> const& MaxULPs)
+	{
+		vec<C, bool, Q> Result(true);
+		for(length_t i = 0; i < C; ++i)
+			Result[i] = all(equal(a[i], b[i], MaxULPs[i]));
+		return Result;
+	}
+
+	template<length_t C, length_t R, typename T, qualifier Q>
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<C, bool, Q> notEqual(mat<C, R, T, Q> const& x, mat<C, R, T, Q> const& y, int MaxULPs)
+	{
+		return notEqual(x, y, vec<C, int, Q>(MaxULPs));
+	}
+
+	template<length_t C, length_t R, typename T, qualifier Q>
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<C, bool, Q> notEqual(mat<C, R, T, Q> const& a, mat<C, R, T, Q> const& b, vec<C, int, Q> const& MaxULPs)
+	{
+		vec<C, bool, Q> Result(true);
+		for(length_t i = 0; i < C; ++i)
+			Result[i] = any(notEqual(a[i], b[i], MaxULPs[i]));
+		return Result;
+	}
+
 }//namespace glm

test/ext/ext_matrix_relational.cpp

@@ -23,6 +23,7 @@
 #include <glm/ext/vector_float2.hpp>
 #include <glm/ext/vector_float3.hpp>
 #include <glm/ext/vector_float4.hpp>
+#include <glm/gtc/ulp.hpp>
 
 template <typename matType, typename vecType>
 static int test_equal()
@@ -58,10 +59,66 @@ static int test_notEqual()
 	return Error;
 }
 
+
+template <typename T>
+static int test_equal_ulps()
+{
+	typedef glm::mat<4, 4, T, glm::defaultp> mat4;
+
+	T const One(1);
+	mat4 const Ones(1);
+
+	int Error = 0;
+
+	T const ULP1Plus = glm::next_float(One);
+	Error += glm::all(glm::equal(Ones, mat4(ULP1Plus), 1)) ? 0 : 1;
+
+	T const ULP2Plus = glm::next_float(ULP1Plus);
+	Error += !glm::all(glm::equal(Ones, mat4(ULP2Plus), 1)) ? 0 : 1;
+
+	T const ULP1Minus = glm::prev_float(One);
+	Error += glm::all(glm::equal(Ones, mat4(ULP1Minus), 1)) ? 0 : 1;
+
+	T const ULP2Minus = glm::prev_float(ULP1Minus);
+	Error += !glm::all(glm::equal(Ones, mat4(ULP2Minus), 1)) ? 0 : 1;
+
+	return Error;
+}
+
+template <typename T>
+static int test_notEqual_ulps()
+{
+	typedef glm::mat<4, 4, T, glm::defaultp> mat4;
+
+	T const One(1);
+	mat4 const Ones(1);
+
+	int Error = 0;
+
+	T const ULP1Plus = glm::next_float(One);
+	Error += !glm::all(glm::notEqual(Ones, mat4(ULP1Plus), 1)) ? 0 : 1;
+
+	T const ULP2Plus = glm::next_float(ULP1Plus);
+	Error += glm::all(glm::notEqual(Ones, mat4(ULP2Plus), 1)) ? 0 : 1;
+
+	T const ULP1Minus = glm::prev_float(One);
+	Error += !glm::all(glm::notEqual(Ones, mat4(ULP1Minus), 1)) ? 0 : 1;
+
+	T const ULP2Minus = glm::prev_float(ULP1Minus);
+	Error += glm::all(glm::notEqual(Ones, mat4(ULP2Minus), 1)) ? 0 : 1;
+
+	return Error;
+}
+
 int main()
 {
 	int Error = 0;
 
+	Error += test_equal_ulps<float>();
+	Error += test_equal_ulps<double>();
+	Error += test_notEqual_ulps<float>();
+	Error += test_notEqual_ulps<double>();
+
 	Error += test_equal<glm::mat2x2, glm::vec2>();
 	Error += test_equal<glm::mat2x3, glm::vec2>();
 	Error += test_equal<glm::mat2x4, glm::vec2>();