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Tests/LibC: Don't implicitly convert float to double in TestSnprintf

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Most RISC-V floating-point operations only generate the canonical NaN,
so the sign bit was cleared in this test.
The sign injection instruction does keep the NaN payload and sign bit,
so doing `-v.f` to get a negative NaN works as expected.
This commit is contained in:
Sönke Holz 2025-01-01 23:17:17 +01:00 committed by Nico Weber
parent e166003179
commit 39a2356c54
1 changed files with 4 additions and 4 deletions
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8
Tests/LibC/TestSnprintf.cpp
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@ -293,15 +293,15 @@ TEST_CASE(float_value_precision)
TEST_CASE(float_value_special)
{
union {
float f;
int i;
double f;
u64 i;
} v;
v.i = 0x7fc00000;
v.i = 0x7ff8000000000000;
EXPECT(test_single<double>({ LITERAL("xxxxxxx"), "|%4f|", v.f, 6, LITERAL("| nan|\0") }));
EXPECT(test_single<double>({ LITERAL("xxxxxxx"), "|%4f|", -v.f, 6, LITERAL("|-nan|\0") }));
v.i = 0x7f800000;
v.i = 0x7ff0000000000000;
EXPECT(test_single<double>({ LITERAL("xxxxxxx"), "|%4f|", v.f, 6, LITERAL("| inf|\0") }));
EXPECT(test_single<double>({ LITERAL("xxxxxxx"), "|%4f|", -v.f, 6, LITERAL("|-inf|\0") }));
}