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Diffstat (limited to 'include/usb.h')
-rw-r--r--include/usb.h19
1 files changed, 11 insertions, 8 deletions
diff --git a/include/usb.h b/include/usb.h
index 0008a9a..074e0f1 100644
--- a/include/usb.h
+++ b/include/usb.h
@@ -234,15 +234,18 @@ int usb_set_interface(struct usb_device *dev, int interface, int alternate);
#define swap_32(x) ((unsigned long)(x))
#else
#define swap_16(x) \
- ((unsigned short)( \
- (((unsigned short)(x) & (unsigned short)0x00ffU) << 8) | \
- (((unsigned short)(x) & (unsigned short)0xff00U) >> 8) ))
+ ({ unsigned short x_ = (unsigned short)x; \
+ (unsigned short)( \
+ ((x_ & 0x00FFU) << 8) | ((x_ & 0xFF00U) >> 8) ); \
+ })
#define swap_32(x) \
- ((unsigned long)( \
- (((unsigned long)(x) & (unsigned long)0x000000ffUL) << 24) | \
- (((unsigned long)(x) & (unsigned long)0x0000ff00UL) << 8) | \
- (((unsigned long)(x) & (unsigned long)0x00ff0000UL) >> 8) | \
- (((unsigned long)(x) & (unsigned long)0xff000000UL) >> 24) ))
+ ({ unsigned long x_ = (unsigned long)x; \
+ (unsigned long)( \
+ ((x_ & 0x000000FFUL) << 24) | \
+ ((x_ & 0x0000FF00UL) << 8) | \
+ ((x_ & 0x00FF0000UL) >> 8) | \
+ ((x_ & 0xFF000000UL) >> 24) ); \
+ })
#endif /* LITTLEENDIAN */
/*