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fix whitespace

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Dirk Jagdmann 2020-03-23 03:04:48 -07:00 committed by Oliver Schmidt
parent e0cb33d9d4
commit beaa77d2d6
1 changed files with 1 additions and 1 deletions
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doc/coding.sgml
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@ -251,7 +251,7 @@ Register variables may give faster and shorter code, but they do also have an
overhead. Register variables are actually zero page locations, so using them
saves roughly one cycle per access. The calling routine may also use register
variables, so the old values have to be saved on function entry and restored
on exit. Saving an d restoring has an overhead of about 70 cycles per 2 byte
on exit. Saving and restoring has an overhead of about 70 cycles per 2 byte
variable. It is easy to see, that - apart from the additional code that is
needed to save and restore the values - you need to make heavy use of a
variable to justify the overhead.