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-rw-r--r--src/mpfr-impl.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/mpfr-impl.h b/src/mpfr-impl.h
index 5beb35dad..95c44ebfd 100644
--- a/src/mpfr-impl.h
+++ b/src/mpfr-impl.h
@@ -581,8 +581,8 @@ __MPFR_DECLSPEC extern const mpfr_t __gmpfr_const_log2_RNDU;
# endif
#endif
-/* With -DXDEBUG, exercise non IEEE floats */
-#ifdef XDEBUG
+/* With -DMPFR_DISABLE_IEEE_FLOATS, exercise non IEEE floats */
+#ifdef MPFR_DISABLE_IEEE_FLOATS
# ifdef _MPFR_IEEE_FLOATS
# undef _MPFR_IEEE_FLOATS
# endif