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-rw-r--r--src/iemlib1/iemlib.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/iemlib1/iemlib.h b/src/iemlib1/iemlib.h
index 6be2de0..5c4f245 100644
--- a/src/iemlib1/iemlib.h
+++ b/src/iemlib1/iemlib.h
@@ -95,7 +95,7 @@ union tabfudge
int32 tf_i[2];
};
-#ifdef __i386__
+#if defined __i386__ || defined __x86_64__
#define IEM_DENORMAL(f) ((((*(unsigned int*)&(f))&0x60000000)==0) || \
(((*(unsigned int*)&(f))&0x60000000)==0x60000000))
/* more stringent test: anything not between 1e-19 and 1e19 in absolute val */