From 0ceaba1da92abbc1eb42fa125ae66971c22ea4ea Mon Sep 17 00:00:00 2001
From: Christophe <christophe@lunarg.com>
Date: Thu, 21 Dec 2023 18:02:00 +0100
Subject: [PATCH] Nan is not supported with C++98

---
 test/ext/ext_scalar_common.cpp | 69 +++++++++++++++++++---------------
 1 file changed, 38 insertions(+), 31 deletions(-)

diff --git a/test/ext/ext_scalar_common.cpp b/test/ext/ext_scalar_common.cpp
index 917a242e..0e24cf34 100644
--- a/test/ext/ext_scalar_common.cpp
+++ b/test/ext/ext_scalar_common.cpp
@@ -38,35 +38,6 @@ static int test_min()
 	return Error;
 }
 
-template <typename T>
-static int test_min_nan()
-{
-	int Error = 0;
-
-	T const B = static_cast<T>(1);
-	T const N = static_cast<T>(GLM_NAN(T));
-	Error += glm::isnan(glm::min(N, B)) ? 0 : 1;
-	Error += !glm::isnan(glm::min(B, N)) ? 0 : 1;
-
-	T const C = static_cast<T>(2);
-	Error += glm::isnan(glm::min(N, B, C)) ? 0 : 1;
-	Error += !glm::isnan(glm::min(B, N, C)) ? 0 : 1;
-	Error += !glm::isnan(glm::min(C, N, B)) ? 0 : 1;
-	Error += !glm::isnan(glm::min(C, B, N)) ? 0 : 1;
-	Error += !glm::isnan(glm::min(B, C, N)) ? 0 : 1;
-	Error += glm::isnan(glm::min(N, C, B)) ? 0 : 1;
-
-	T const D = static_cast<T>(3);
-	Error += !glm::isnan(glm::min(D, N, B, C)) ? 0 : 1;
-	Error += !glm::isnan(glm::min(B, D, N, C)) ? 0 : 1;
-	Error += !glm::isnan(glm::min(C, N, D, B)) ? 0 : 1;
-	Error += !glm::isnan(glm::min(C, B, D, N)) ? 0 : 1;
-	Error += !glm::isnan(glm::min(B, C, N, D)) ? 0 : 1;
-	Error += glm::isnan(glm::min(N, C, B, D)) ? 0 : 1;
-
-	return Error;
-}
-
 template <typename T>
 static int test_max()
 {
@@ -96,6 +67,36 @@ static int test_max()
 	return Error;
 }
 
+#if ((GLM_LANG & GLM_LANG_CXX11_FLAG) || (GLM_COMPILER & GLM_COMPILER_VC))
+template <typename T>
+static int test_min_nan()
+{
+	int Error = 0;
+
+	T const B = static_cast<T>(1);
+	T const N = static_cast<T>(GLM_NAN(T));
+	Error += glm::isnan(glm::min(N, B)) ? 0 : 1;
+	Error += !glm::isnan(glm::min(B, N)) ? 0 : 1;
+
+	T const C = static_cast<T>(2);
+	Error += glm::isnan(glm::min(N, B, C)) ? 0 : 1;
+	Error += !glm::isnan(glm::min(B, N, C)) ? 0 : 1;
+	Error += !glm::isnan(glm::min(C, N, B)) ? 0 : 1;
+	Error += !glm::isnan(glm::min(C, B, N)) ? 0 : 1;
+	Error += !glm::isnan(glm::min(B, C, N)) ? 0 : 1;
+	Error += glm::isnan(glm::min(N, C, B)) ? 0 : 1;
+
+	T const D = static_cast<T>(3);
+	Error += !glm::isnan(glm::min(D, N, B, C)) ? 0 : 1;
+	Error += !glm::isnan(glm::min(B, D, N, C)) ? 0 : 1;
+	Error += !glm::isnan(glm::min(C, N, D, B)) ? 0 : 1;
+	Error += !glm::isnan(glm::min(C, B, D, N)) ? 0 : 1;
+	Error += !glm::isnan(glm::min(B, C, N, D)) ? 0 : 1;
+	Error += glm::isnan(glm::min(N, C, B, D)) ? 0 : 1;
+
+	return Error;
+}
+
 template <typename T>
 static int test_max_nan()
 {
@@ -182,6 +183,7 @@ static int test_fmax()
 
 	return Error;
 }
+#endif//
 
 static int test_clamp()
 {
@@ -334,11 +336,15 @@ int main()
 
 	Error += test_min<float>();
 	Error += test_min<double>();
-	Error += test_min_nan<float>();
-	Error += test_min_nan<double>();
+
 
 	Error += test_max<float>();
 	Error += test_max<double>();
+
+#if ((GLM_LANG & GLM_LANG_CXX11_FLAG) || (GLM_COMPILER & GLM_COMPILER_VC))
+	Error += test_min_nan<float>();
+	Error += test_min_nan<double>();
+
 	Error += test_max_nan<float>();
 	Error += test_max_nan<double>();
 
@@ -347,6 +353,7 @@ int main()
 
 	Error += test_fmax<float>();
 	Error += test_fmax<double>();
+#endif//
 
 	Error += test_clamp();
 	Error += test_repeat();