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-rw-r--r--modules/isnan-tests1
1 files changed, 1 insertions, 0 deletions
diff --git a/modules/isnan-tests b/modules/isnan-tests
index e21153b7e4..417e559373 100644
--- a/modules/isnan-tests
+++ b/modules/isnan-tests
@@ -12,6 +12,7 @@ configure.ac:
gl_FLOAT_EXPONENT_LOCATION
gl_DOUBLE_EXPONENT_LOCATION
gl_LONG_DOUBLE_EXPONENT_LOCATION
+AC_REQUIRE([gl_LONG_DOUBLE_VS_DOUBLE])
Makefile.am:
TESTS += test-isnan