[Sdcc-user] RE: Using sdcc with Cypress USB firmware

[Bill J. <wb...@ma...>]

On 5/31/2002, Patrick Calmettes posted EZ-USB code he ported from KEIL to Sdcc-format; some of the files came directly from Cypress Semiconductor's EZ-USB and EZ-USB FX development kit frameworks sources (copyright AnchorChips, aquired by Cypress a few years ago).

Comparing Patrick's posting to the original files, I find many instances where the bitwise left-shift operator "<<" has been changed to a logical less-than operator "<".  For example, in the file "ezusb.h",
   #define   SUDAV_USBVECT  (0 << 2)
became
   #define   SUDAV_USBVECT  (0 < 2)

In <sdcc>/doc/sdccman.pdf, section "4.1.9 Bit-rotation", the examples clearly show two angle-brackets to represent the bit shifting function.

Can someone, perhaps Patrick, please clarify this difference?

Best Regards,

Bill Judd