Added GLM_FORCE_SILENT_WARNINGS to silent GLM warnings when using language extensions but using W4 or Wpedantic warnings #814 #775

glm/detail/setup.hpp

@@ -764,6 +764,15 @@ namespace detail
 #	define GLM_CONFIG_ANONYMOUS_STRUCT GLM_DISABLE
 #endif
 
+///////////////////////////////////////////////////////////////////////////////////
+// Silent warnings
+
+#ifdef GLM_FORCE_SILENT_WARNINGS
+#	define GLM_SILENT_WARNINGS GLM_ENABLE
+#else
+#	define GLM_SILENT_WARNINGS GLM_DISABLE
+#endif
+
 ///////////////////////////////////////////////////////////////////////////////////
 // Precision
 
@@ -1003,6 +1012,12 @@ namespace detail
 #		pragma message("GLM: GLM_FORCE_UNRESTRICTED_GENTYPE is undefined. Follows strictly GLSL on valid function genTypes.")
 #	endif
 
+#	if GLM_SILENT_WARNINGS == GLM_ENABLE
+#		pragma message("GLM: GLM_FORCE_SILENT_WARNINGS is defined. Ignores C++ warnings from using C++ language extensions.")
+#	else
+#		pragma message("GLM: GLM_FORCE_SILENT_WARNINGS is undefined. Shows C++ warnings from using C++ language extensions.")
+#	endif
+
 #	ifdef GLM_FORCE_SINGLE_ONLY
 #		pragma message("GLM: GLM_FORCE_SINGLE_ONLY is defined. Using only single precision floating-point types")
 #	endif

glm/detail/type_quat.hpp

@@ -38,6 +38,20 @@ namespace glm
 
 		// -- Data --
 
+#		if GLM_SILENT_WARNINGS == GLM_ENABLE
+#			if GLM_COMPILER & GLM_COMPILER_GCC
+#				pragma GCC diagnostic push
+#				pragma GCC diagnostic ignored "-Wpedantic"
+#			elif GLM_COMPILER & GLM_COMPILER_CLANG
+#				pragma clang diagnostic push
+#				pragma clang diagnostic ignored "-Wgnu-anonymous-struct"
+#				pragma clang diagnostic ignored "-Wnested-anon-types"
+#			elif GLM_COMPILER & GLM_COMPILER_VC
+#				pragma warning(push)
+#				pragma warning(disable: 4201)  // nonstandard extension used : nameless struct/union
+#			endif
+#		endif
+
 #		if GLM_LANG & GLM_LANG_CXXMS_FLAG
 			union
 			{
@@ -49,6 +63,16 @@ namespace glm
 			T x, y, z, w;
 #		endif
 
+#		if GLM_SILENT_WARNINGS == GLM_ENABLE
+#			if GLM_COMPILER & GLM_COMPILER_CLANG
+#				pragma clang diagnostic pop
+#			elif GLM_COMPILER & GLM_COMPILER_GCC
+#				pragma GCC diagnostic pop
+#			elif GLM_COMPILER & GLM_COMPILER_VC
+#				pragma warning(pop)
+#			endif
+#		endif
+
 		// -- Component accesses --
 
 		typedef length_t length_type;

glm/detail/type_vec1.hpp

@@ -24,6 +24,20 @@ namespace glm
 
 		// -- Data --
 
+#		if GLM_SILENT_WARNINGS == GLM_ENABLE
+#			if GLM_COMPILER & GLM_COMPILER_GCC
+#				pragma GCC diagnostic push
+#				pragma GCC diagnostic ignored "-Wpedantic"
+#			elif GLM_COMPILER & GLM_COMPILER_CLANG
+#				pragma clang diagnostic push
+#				pragma clang diagnostic ignored "-Wgnu-anonymous-struct"
+#				pragma clang diagnostic ignored "-Wnested-anon-types"
+#			elif GLM_COMPILER & GLM_COMPILER_VC
+#				pragma warning(push)
+#				pragma warning(disable: 4201)  // nonstandard extension used : nameless struct/union
+#			endif
+#		endif
+
 #		if GLM_CONFIG_XYZW_ONLY
 			T x;
 #		elif GLM_CONFIG_ANONYMOUS_STRUCT == GLM_ENABLE
@@ -55,6 +69,16 @@ namespace glm
 				GLM_SWIZZLE_GEN_VEC_FROM_VEC1(T, Q)
 #			endif
 */
+#		endif
+
+#		if GLM_SILENT_WARNINGS == GLM_ENABLE
+#			if GLM_COMPILER & GLM_COMPILER_CLANG
+#				pragma clang diagnostic pop
+#			elif GLM_COMPILER & GLM_COMPILER_GCC
+#				pragma GCC diagnostic pop
+#			elif GLM_COMPILER & GLM_COMPILER_VC
+#				pragma warning(pop)
+#			endif
 #		endif
 
 		// -- Component accesses --

glm/detail/type_vec2.hpp

@@ -24,6 +24,20 @@ namespace glm
 
 		// -- Data --
 
+#		if GLM_SILENT_WARNINGS == GLM_ENABLE
+#			if GLM_COMPILER & GLM_COMPILER_GCC
+#				pragma GCC diagnostic push
+#				pragma GCC diagnostic ignored "-Wpedantic"
+#			elif GLM_COMPILER & GLM_COMPILER_CLANG
+#				pragma clang diagnostic push
+#				pragma clang diagnostic ignored "-Wgnu-anonymous-struct"
+#				pragma clang diagnostic ignored "-Wnested-anon-types"
+#			elif GLM_COMPILER & GLM_COMPILER_VC
+#				pragma warning(push)
+#				pragma warning(disable: 4201)  // nonstandard extension used : nameless struct/union
+#			endif
+#		endif
+
 #		if GLM_CONFIG_XYZW_ONLY
 			T x, y;
 #		elif GLM_CONFIG_ANONYMOUS_STRUCT == GLM_ENABLE
@@ -54,6 +68,16 @@ namespace glm
 #			if GLM_CONFIG_SWIZZLE == GLM_SWIZZLE_FUNCTION
 				GLM_SWIZZLE_GEN_VEC_FROM_VEC2(T, Q)
 #			endif//GLM_CONFIG_SWIZZLE
+#		endif
+
+#		if GLM_SILENT_WARNINGS == GLM_ENABLE
+#			if GLM_COMPILER & GLM_COMPILER_CLANG
+#				pragma clang diagnostic pop
+#			elif GLM_COMPILER & GLM_COMPILER_GCC
+#				pragma GCC diagnostic pop
+#			elif GLM_COMPILER & GLM_COMPILER_VC
+#				pragma warning(pop)
+#			endif
 #		endif
 
 		// -- Component accesses --

glm/detail/type_vec3.hpp

@@ -24,6 +24,20 @@ namespace glm
 
 		// -- Data --
 
+#		if GLM_SILENT_WARNINGS == GLM_ENABLE
+#			if GLM_COMPILER & GLM_COMPILER_GCC
+#				pragma GCC diagnostic push
+#				pragma GCC diagnostic ignored "-Wpedantic"
+#			elif GLM_COMPILER & GLM_COMPILER_CLANG
+#				pragma clang diagnostic push
+#				pragma clang diagnostic ignored "-Wgnu-anonymous-struct"
+#				pragma clang diagnostic ignored "-Wnested-anon-types"
+#			elif GLM_COMPILER & GLM_COMPILER_VC
+#				pragma warning(push)
+#				pragma warning(disable: 4201)  // nonstandard extension used : nameless struct/union
+#			endif
+#		endif
+
 #		if GLM_CONFIG_XYZW_ONLY
 			T x, y, z;
 #		elif GLM_CONFIG_ANONYMOUS_STRUCT == GLM_ENABLE
@@ -57,6 +71,16 @@ namespace glm
 #			endif//GLM_CONFIG_SWIZZLE
 #		endif//GLM_LANG
 
+#		if GLM_SILENT_WARNINGS == GLM_ENABLE
+#			if GLM_COMPILER & GLM_COMPILER_CLANG
+#				pragma clang diagnostic pop
+#			elif GLM_COMPILER & GLM_COMPILER_GCC
+#				pragma GCC diagnostic pop
+#			elif GLM_COMPILER & GLM_COMPILER_VC
+#				pragma warning(pop)
+#			endif
+#		endif
+
 		// -- Component accesses --
 
 		/// Return the count of components of the vector

glm/detail/type_vec4.hpp

@@ -24,6 +24,20 @@ namespace glm
 
 		// -- Data --
 
+#		if GLM_SILENT_WARNINGS == GLM_ENABLE
+#			if GLM_COMPILER & GLM_COMPILER_GCC
+#				pragma GCC diagnostic push
+#				pragma GCC diagnostic ignored "-Wpedantic"
+#			elif GLM_COMPILER & GLM_COMPILER_CLANG
+#				pragma clang diagnostic push
+#				pragma clang diagnostic ignored "-Wgnu-anonymous-struct"
+#				pragma clang diagnostic ignored "-Wnested-anon-types"
+#			elif GLM_COMPILER & GLM_COMPILER_VC
+#				pragma warning(push)
+#				pragma warning(disable: 4201)  // nonstandard extension used : nameless struct/union
+#			endif
+#		endif
+
 #		if GLM_CONFIG_XYZW_ONLY
 			T x, y, z, w;
 #		elif GLM_CONFIG_ANONYMOUS_STRUCT == GLM_ENABLE
@@ -56,6 +70,16 @@ namespace glm
 #			if GLM_CONFIG_SWIZZLE == GLM_SWIZZLE_FUNCTION
 				GLM_SWIZZLE_GEN_VEC_FROM_VEC4(T, Q)
 #			endif
+#		endif
+
+#		if GLM_SILENT_WARNINGS == GLM_ENABLE
+#			if GLM_COMPILER & GLM_COMPILER_CLANG
+#				pragma clang diagnostic pop
+#			elif GLM_COMPILER & GLM_COMPILER_GCC
+#				pragma GCC diagnostic pop
+#			elif GLM_COMPILER & GLM_COMPILER_VC
+#				pragma warning(pop)
+#			endif
 #		endif
 
 		// -- Component accesses --

glm/ext/vector_relational.inl

@@ -49,12 +49,14 @@ namespace glm
 			if(a.negative() != b.negative())
 			{
 				// Check for equality to make sure +0==-0
-				return a.mantissa() == b.mantissa() && a.exponent() == b.exponent();
+				Result[i] = a.mantissa() == b.mantissa() && a.exponent() == b.exponent();
+			}
+			else
+			{
+				// Find the difference in ULPs.
+				typename detail::float_t<T>::int_type const DiffULPs = abs(a.i - b.i);
+				Result[i] = DiffULPs <= MaxULPs[i];
 			}
-
-			// Find the difference in ULPs.
-			typename detail::float_t<T>::int_type const DiffULPs = abs(a.i - b.i);
-			Result[i] = DiffULPs <= MaxULPs;
 		}
 		return Result;
 	}
@@ -62,12 +64,12 @@ namespace glm
 	template<length_t L, typename T, qualifier Q>
 	GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<L, bool, Q> notEqual(vec<L, T, Q> const& x, vec<L, T, Q> const& y, int MaxULPs)
 	{
-		return !equal(x, y, MaxULPs);
+		return notEqual(x, y, vec<L, int, Q>(MaxULPs));
 	}
 
 	template<length_t L, typename T, qualifier Q>
 	GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<L, bool, Q> notEqual(vec<L, T, Q> const& x, vec<L, T, Q> const& y, vec<L, int, Q> const& MaxULPs)
 	{
-		return !equal(x, y, MaxULPs);
+		return not_(equal(x, y, MaxULPs));
 	}
 }//namespace glm

manual.md

@@ -33,6 +33,7 @@
 + [2.16. GLM\_FORCE\_DEPTH\_ZERO\_TO\_ONE: Force the use of a clip space between 0 to 1](#section2_16)
 + [2.17. GLM\_FORCE\_SIZE\_T\_LENGTH: Vector and matrix static size type](#section2_17)
 + [2.18. GLM\_FORCE\_UNRESTRICTED\_GENTYPE: Removing genType restriction](#section2_18)
++ [2.19. GLM\_FORCE\_SILENT\_WARNINGS: Silent C++ warnings from language extensions](#section2_19)
 + [3. Stable extensions](#section3)
 + [3.1. Scalar types](#section3_1)
 + [3.2. Scalar functions](#section3_2)
@@ -696,6 +697,11 @@ int average(int const A, int const B)
 }
 ```
 
+### <a name="section2_19"></a> 2.19. GLM\_FORCE\_SILENT\_WARNINGS: Silent C++ warnings from language extensions
+
+When using /W4 on Visual C++ or -Wpedantic on GCC, for example, the compilers will generate warnings for using C++ language extensions (/Za with Visual C++) such as anonymous struct.
+GLM relies on anonymous structs for swizzle operators and aligned vector types. To silent those warnings define `GLM_FORCE_SILENT_WARNINGS` before including GLM headers.
+
 ---
 <div style="page-break-after: always;"> </div>
 

readme.md

@@ -52,9 +52,10 @@ glm::mat4 camera(float Translate, glm::vec2 const& Rotate)
 
 ## Release notes
 
-### [GLM 0.9.9.3](https://github.com/g-truc/glm/commits/master) - 201X-XX-XX
+### [GLM 0.9.9.3](https://github.com/g-truc/glm/commits/master) - 2018-XX-XX
 #### Features:
 - Added equal and notEqual overload with max ULPs parameters for scalar numbers #121
+- Added GLM_FORCE_SILENT_WARNINGS to silent GLM warnings when using language extensions but using W4 or Wpedantic warnings #814 #775
 
 ### [GLM 0.9.9.2](https://github.com/g-truc/glm/releases/tag/0.9.9.2) - 2018-09-14
 #### Fixes:

test/ext/ext_scalar_relational.cpp

@@ -1,7 +1,7 @@
 #include <glm/ext/scalar_relational.hpp>
 #include <cmath>
 
-int test_equal_epsilon()
+static int test_equal_epsilon()
 {
 #	if GLM_CONFIG_CONSTEXP == GLM_ENABLE
 		static_assert(glm::equal(1.01f, 1.02f, 0.1f), "GLM: Failed constexpr");
@@ -16,7 +16,7 @@ int test_equal_epsilon()
 	return Error;
 }
 
-int test_notEqual_epsilon()
+static int test_notEqual_epsilon()
 {
 #	if GLM_CONFIG_CONSTEXP == GLM_ENABLE
 		static_assert(glm::notEqual(1.01f, 1.02f, 0.001f), "GLM: Failed constexpr");
@@ -31,8 +31,7 @@ int test_notEqual_epsilon()
 	return Error;
 }
 
-#if GLM_LANG & GLM_LANG_CXX11_FLAG
-int test_equal_ulps()
+static int test_equal_ulps()
 {
 	int Error = 0;
 	
@@ -51,7 +50,7 @@ int test_equal_ulps()
 	return Error;
 }
 
-int test_notEqual_ulps()
+static int test_notEqual_ulps()
 {
 	int Error = 0;
 	
@@ -69,7 +68,6 @@ int test_notEqual_ulps()
 	
 	return Error;
 }
-#endif
 
 int main()
 {
@@ -77,11 +75,9 @@ int main()
 
 	Error += test_equal_epsilon();
 	Error += test_notEqual_epsilon();
-	
-#if GLM_LANG & GLM_LANG_CXX11_FLAG
+
 	Error += test_equal_ulps();
 	Error += test_notEqual_ulps();
-#endif
-	
+
 	return Error;
 }

test/ext/ext_vector_relational.cpp

@@ -68,10 +68,71 @@ static int test_constexpr()
 	return 0;
 }
 
+template <typename T>
+static int test_equal_ulps()
+{
+	typedef glm::vec<4, T, glm::defaultp> vec4;
+
+	T const Zero(0);
+	T const One(1);
+	T const Two(2);
+
+	vec4 const Ones(1);
+	
+	int Error = 0;
+	
+	T const ULP1Plus = std::nextafter(One, Two);
+	Error += glm::all(glm::equal(Ones, vec4(ULP1Plus), 1)) ? 0 : 1;
+
+	T const ULP2Plus = std::nextafter(ULP1Plus, Two);
+	Error += !glm::all(glm::equal(Ones, vec4(ULP2Plus), 1)) ? 0 : 1;
+	
+	T const ULP1Minus = std::nextafter(One, Zero);
+	Error += glm::all(glm::equal(Ones, vec4(ULP1Minus), 1)) ? 0 : 1;
+
+	T const ULP2Minus = std::nextafter(ULP1Minus, Zero);
+	Error += !glm::all(glm::equal(Ones, vec4(ULP2Minus), 1)) ? 0 : 1;
+	
+	return Error;
+}
+
+template <typename T>
+static int test_notEqual_ulps()
+{
+	typedef glm::vec<4, T, glm::defaultp> vec4;
+	
+	T const Zero(0);
+	T const One(1);
+	T const Two(2);
+
+	vec4 const Ones(1);
+	
+	int Error = 0;
+	
+	T const ULP1Plus = std::nextafter(One, Two);
+	Error += !glm::all(glm::notEqual(Ones, vec4(ULP1Plus), 1)) ? 0 : 1;
+	
+	T const ULP2Plus = std::nextafter(ULP1Plus, Two);
+	Error += glm::all(glm::notEqual(Ones, vec4(ULP2Plus), 1)) ? 0 : 1;
+	
+	T const ULP1Minus = std::nextafter(One, Zero);
+	Error += !glm::all(glm::notEqual(Ones, vec4(ULP1Minus), 1)) ? 0 : 1;
+	
+	T const ULP2Minus = std::nextafter(ULP1Minus, Zero);
+	Error += glm::all(glm::notEqual(Ones, vec4(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::vec1>();
 	Error += test_equal<glm::lowp_vec1>();
 	Error += test_equal<glm::mediump_vec1>();