Fixed isnan for Intel compiler

CMakeLists.txt

@@ -40,6 +40,8 @@ elseif(NOT GLM_TEST_ENABLE_MS_EXTENSIONS)
 	endif()
 endif()
 
+#set(GLM_SIMD_INSTRUCTION_SET "" CACHE STRING "Instruction set. Possible values are SSE1, SSE2")
+
 option(GLM_TEST_ENABLE_SIMD "Enable SIMD optimizations" OFF)
 if(GLM_TEST_ENABLE_SIMD)
 	if(CMAKE_COMPILER_IS_GNUCXX)

glm/core/func_common.inl

@@ -809,8 +809,15 @@ namespace detail
 	{
 		GLM_STATIC_ASSERT(detail::type<genType>::is_float, "'isnan' only accept floating-point inputs");
 
-#       if(GLM_COMPILER & GLM_COMPILER_VC)
+#       if(GLM_COMPILER & (GLM_COMPILER_VC | GLM_COMPILER_INTEL))
             return _isnan(x) != 0;
+#		elif(GLM_COMPILER & GLM_COMPILER_GCC)
+#			if(GLM_PLATFORM & GLM_PLATFORM_ANDROID)
+				return _isnan(x) != 0;
+#			else
+				return std::isnan(x);
+#			endif
+/*
 #       elif(GLM_COMPILER & GLM_COMPILER_GCC)
 #           if(GLM_PLATFORM & GLM_PLATFORM_ANDROID)
                 return _isnan(x) != 0;
@@ -818,7 +825,8 @@ namespace detail
                 return std::isnan(x);
 #           endif
 #       elif(GLM_COMPILER & GLM_COMPILER_INTEL)
-            return isnan(x) != 0;			
+            return _isnan(x) != 0;
+*/
 #       else
             return std::isnan(x);
 #       endif

test/core/core_func_common.cpp

@@ -364,14 +364,14 @@ int test_isnan()
  		Error += true == glm::any(glm::isnan(glm::dvec3(0.0 / Zero_d))) ? 0 : 1;
  		Error += true == glm::any(glm::isnan(glm::dvec4(0.0 / Zero_d))) ? 0 : 1;
 	}
-/*
+
 	{
  		Error += true == glm::isnan(0.0f/Zero_f) ? 0 : 1;
  		Error += true == glm::any(glm::isnan(glm::vec2(0.0f/Zero_f))) ? 0 : 1;
  		Error += true == glm::any(glm::isnan(glm::vec3(0.0f/Zero_f))) ? 0 : 1;
  		Error += true == glm::any(glm::isnan(glm::vec4(0.0f/Zero_f))) ? 0 : 1;
 	}
-*/
+
 	return Error;
 }