Detect: Provide __float128 when simulating GNU compilers

GNU compilers provide a __float128 builtin type on Intel architectures.
When simulating such GNU compiler preprocessing, define a __float128
type with the expected size and alignment in case the translation unit
references it.

1 files changed, 1 insertions, 0 deletions

diff --git a/test/input/GNU-float128.c b/test/input/GNU-float128.c
new file mode 100644
index 0000000..fbb07e1
--- /dev/null
+++ b/test/input/GNU-float128.c
@@ -0,0 +1 @@
+__float128 start(__float128);