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-rw-r--r--include/libcss/fpmath.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/libcss/fpmath.h b/include/libcss/fpmath.h
index d7cac4d..eec40b3 100644
--- a/include/libcss/fpmath.h
+++ b/include/libcss/fpmath.h
@@ -130,6 +130,8 @@ css_float_to_fixed(const float a) {
/* truncate a fixed point value */
#define TRUNCATEFIX(a) (a & ~((1 << CSS_RADIX_POINT)- 1 ))
+/* get fractional component of a fixed point value */
+#define FIXFRAC(a) (a & ((1 << CSS_RADIX_POINT)- 1 ))
/* Useful values */
#define F_PI_2 0x00000648 /* 1.5708 (PI/2) */