cmake math(HEXADECIMAL) examples

libcpr/cpr CMakeLists.txt :4

math(EXPR cpr_VERSION_NUM "${cpr_VERSION_MAJOR} * 0x10000 + ${cpr_VERSION_MINOR} * 0x100 + ${cpr_VERSION_PATCH}" OUTPUT_FORMAT HEXADECIMAL)

microsoft/vcpkg ports/rhash/CMakeLists.txt :9

MATH(EXPR RHASH_XVERSION "((${CMAKE_MATCH_1} * 256 + ${CMAKE_MATCH_2}) * 256 + ${CMAKE_MATCH_3}) * 256" OUTPUT_FORMAT HEXADECIMAL)