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Skip long double tests if they're not 80 bits #247

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Merged
ulfjack merged 1 commit into from
Jan 6, 2026
Merged

Skip long double tests if they're not 80 bits #247

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8 changes: 8 additions & 0 deletions ryu/tests/generic_128_test.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -323,6 +323,10 @@ static char* l2s(long double d) {
#define ASSERT_L2S(a, b) { char* result = l2s(b); ASSERT_STREQ(a, result); free(result); } while (0);

TEST(Generic128Test, long_double_to_fd128) {
if (sizeof(long double) != 10) {
// We're on an old version of gtest. Upgrade?
return;
}
ASSERT_L2S("0E0", 0.0);
ASSERT_L2S("-0E0", -0.0);
ASSERT_L2S("1E0", 1.0);
Expand All @@ -344,6 +348,10 @@ TEST(Generic128Test, long_double_to_fd128) {
}

TEST(Generic128Test, regression_test_long_double) {
if (sizeof(long double) != 10) {
// We're on an old version of gtest. Upgrade?
return;
}
// The binary 80-bit representation of this number has a mantissa that is a
// one followed by zeros. This is a special case, because the next lower
// number is closer to X than the next higher number, so it is possible that
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