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-rw-r--r--numpy/core/setup_common.py1
1 files changed, 1 insertions, 0 deletions
diff --git a/numpy/core/setup_common.py b/numpy/core/setup_common.py
index c9f5030f4..a1a9ac9af 100644
--- a/numpy/core/setup_common.py
+++ b/numpy/core/setup_common.py
@@ -98,6 +98,7 @@ OPTIONAL_STDFUNCS = ["expm1", "log1p", "acosh", "asinh", "atanh",
"copysign", "nextafter"]
# optional gcc compiler builtins and their call arguments
+# call arguments are required as the compiler will do strict signature checking
OPTIONAL_INTRINSICS = [("__builtin_isnan", '5.'),
("__builtin_isinf", '5.'),
("__builtin_isfinite", '5.')]