Fix compilation error when Vc and date.h are both included

Author: dirkvdb

core/CMakeLists.txt

@@ -46,7 +46,7 @@
 
         if (GDX_AVX2)
             set_target_properties(Vc::Vc PROPERTIES
-                INTERFACE_COMPILE_DEFINITIONS Vc_IMPL=AVX2
+                INTERFACE_COMPILE_DEFINITIONS "Vc_IMPL=AVX2;Vc_NO_STD_FUNCTIONS"
             )
             if (MSVC)
                 set_target_properties(Vc::Vc PROPERTIES
@@ -60,16 +60,16 @@
         else ()
             if (MSVC)
                 set_target_properties(Vc::Vc PROPERTIES
-                    INTERFACE_COMPILE_DEFINITIONS Vc_IMPL=SSE2
+                    INTERFACE_COMPILE_DEFINITIONS "Vc_IMPL=SSE2;Vc_NO_STD_FUNCTIONS"
                 )
             elseif (CMAKE_SYSTEM_PROCESSOR STREQUAL "arm64")
                 set_target_properties(Vc::Vc PROPERTIES
-                    INTERFACE_COMPILE_DEFINITIONS Vc_IMPL=Scalar
+                    INTERFACE_COMPILE_DEFINITIONS "Vc_IMPL=Scalar;Vc_NO_STD_FUNCTIONS"
                 )
             else ()
                 set_target_properties(Vc::Vc PROPERTIES
                     INTERFACE_COMPILE_OPTIONS -msse4.2
-                    INTERFACE_COMPILE_DEFINITIONS Vc_IMPL=SSE4_2
+                    INTERFACE_COMPILE_DEFINITIONS "Vc_IMPL=SSE4_2;Vc_NO_STD_FUNCTIONS"
                 )
             endif ()
         endif ()

core/include/gdx/denseraster.h

@@ -234,7 +234,7 @@ class DenseRaster
             if (auto nod = nodata(); nod.has_value() && !std::isnan(*nod)) {
                 if constexpr (simd_supported()) {
                     simd::for_each(begin(), end(), [nodata = *nod](auto& value) {
-                        value(std::isnan(value)) = nodata;
+                        value(Vc::isnan(value)) = nodata;
                     });
                 } else {
                     std::transform(begin(), end(), begin(), [nodata = *nod](T value) {