I think, built-ins may cover all basic algorithms which pure C implementation is very very complex (count of bits, odd/even...) but in assembler is very simple. Moreover, in most cases these functions should be inline, because call prepare+prolog+epilog of function some time took same number of resources. I do not sure that all ports must contain one set of built-ins.
вс, 3 окт. 2021 г., 10:58 Philipp Klaus Krause <p...@spth.de>: > Dear SDCC users, > > would you consider it useful to have more functionality for bit > manipulation exposed as functions in the stadnard library. If yes, any > of the following (and if yes, with which interface?)? Anything else? > > * Endiannnes conversion for individual integers (e.g. big-endian to > native, native to little-endian, etc) via functions that convert from a > cahr array to the inetger or vice versa > * Population count (i.e. the number of bits that are 1) of an integer > * Rotation of integer types > * Count leading / trailing zeroes / ones > * Single bit chek (i.e. check if an integer is a power of two, and if > yes, which one) > * Generic byte reverse for a block of memory > > Philipp > > > _______________________________________________ > Sdcc-user mailing list > Sdcc-user@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/sdcc-user >
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