make FP formatting available to be used at compile-time (#2426)

* works only with FMT_HEADER_ONLY * works only with float and double types (not long double)
2021-09-18 08:03:23 -07:00
parent d9fd695ac7
commit b4d9d82e1d
6 changed files with 278 additions and 109 deletions
@@ -84,6 +84,11 @@ if (NOT (MSVC AND BUILD_SHARED_LIBS))
 endif ()
 add_fmt_test(ostream-test)
 add_fmt_test(compile-test)
+add_fmt_test(compile-fp-test HEADER_ONLY)
+if (MSVC)
+  # Without this option, MSVC returns 199711L for the __cplusplus macro.
+  target_compile_options(compile-fp-test PRIVATE /Zc:__cplusplus)
+endif()
 add_fmt_test(printf-test)
 add_fmt_test(ranges-test ranges-odr-test.cc)
 add_fmt_test(scan-test)