diff options
| author | Jonathan Wakely <jwakely@redhat.com> | 2022-06-28 09:17:06 +0100 |
|---|---|---|
| committer | Jonathan Wakely <jwakely@redhat.com> | 2022-06-28 09:29:24 +0100 |
| commit | 30aea28bd30027e0a6be8e3077828256779954b3 (patch) | |
| tree | 56d8b5e3dc6245ddd8678f19c3cc246c0fee180c /libstdc++-v3/testsuite | |
| parent | 10caa98a3792caae367844f08946f849210c1753 (diff) | |
libstdc++: testsuite: Guard use of C99 std::log2
This prevents the test from failing if the only thing not supported is
the text printed to the log about the size of the floating-point type.
libstdc++-v3/ChangeLog:
* testsuite/20_util/from_chars/4.cc: Only use log2 if C99 math
functions are available.
Diffstat (limited to 'libstdc++-v3/testsuite')
| -rw-r--r-- | libstdc++-v3/testsuite/20_util/from_chars/4.cc | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/libstdc++-v3/testsuite/20_util/from_chars/4.cc b/libstdc++-v3/testsuite/20_util/from_chars/4.cc index dcd9f97c946..c27df4ffa5e 100644 --- a/libstdc++-v3/testsuite/20_util/from_chars/4.cc +++ b/libstdc++-v3/testsuite/20_util/from_chars/4.cc @@ -300,9 +300,11 @@ test_max_mantissa() if (Float_limits::is_iec559 && Float_limits::digits < UInt_limits::digits) { +#ifdef _GLIBCXX_USE_C99_MATH_TR1 std::printf("Testing %d-bit float, using %zu-bit integer\n", Float_limits::digits + (int)std::log2(Float_limits::max_exponent) + 1, sizeof(UIntT) * __CHAR_BIT__); +#endif std::from_chars_result res; FloatT flt; |