cmake HAVE_FMODF examples

llvm-dcpu16/llvm-dcpu16 cmake/config-ix.cmake :107 

check_symbol_exists(fmodf math.h HAVE_FMODF)

gazebosim/gazebo-classic deps/opende/CMakeLists.txt :57 

CHECK_CXX_SOURCE_COMPILES("#include <math.h> 
int main() {fmodf(0,0); return 1;}" HAVE_FMODF)

KhronosGroup/SPIRV-LLVM cmake/config-ix.cmake :144 

check_symbol_exists(fmodf math.h HAVE_FMODF)