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Diffstat (limited to 'include/linux/math.h')
-rw-r--r--include/linux/math.h12
1 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/math.h b/include/linux/math.h
index 53674a327e39..439b8f0b9ebd 100644
--- a/include/linux/math.h
+++ b/include/linux/math.h
@@ -2,6 +2,7 @@
#ifndef _LINUX_MATH_H
#define _LINUX_MATH_H
+#include <linux/types.h>
#include <asm/div64.h>
#include <uapi/linux/kernel.h>
@@ -106,6 +107,17 @@
} \
)
+#define __STRUCT_FRACT(type) \
+struct type##_fract { \
+ __##type numerator; \
+ __##type denominator; \
+};
+__STRUCT_FRACT(s16)
+__STRUCT_FRACT(u16)
+__STRUCT_FRACT(s32)
+__STRUCT_FRACT(u32)
+#undef __STRUCT_FRACT
+
/*
* Multiplies an integer by a fraction, while avoiding unnecessary
* overflow or loss of precision.