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-rw-r--r--include/extlib_util.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/extlib_util.h b/include/extlib_util.h
index 259d944..6e4d94b 100644
--- a/include/extlib_util.h
+++ b/include/extlib_util.h
@@ -29,3 +29,6 @@
/* convert milliseconds to 1-p, with p a real pole */
float milliseconds_2_one_minus_realpole(float time);
+
+/* check if floating point number is denormal */
+#define IS_DENORMAL(f) (((*(unsigned int *)&(f))&0x7f800000) == 0)