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Merge branch 'master' of github.com:cisco/chezscheme

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original commit: a70016d9941df3e62c27dfababda92b0d91dac10
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dybvig 2016-06-16 23:11:14 -04:00
commit f4b03df12e
1 changed files with 4 additions and 4 deletions
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release_notes/release_notes.stex
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@ -1000,15 +1000,15 @@ been added, per SRFI~19:
(subtract-duration \var{t1} \var{t2}) ;=> \var{t3}
\endschemedisplay
\scheme{time-duration} takes two time objects \var{t1} and \var{t2},
\scheme{time-difference} takes two time objects \var{t1} and \var{t2},
which must have the same time type, and returns the result of subtracting
\var{t2} from \var{t1}, represented as a new time object with type
\scheme{duration}.
\scheme{time-duration}.
\scheme{add-duration} adds time object \var{t2}, which must be of type
\scheme{duration}, to time object \var{t1}, producing a new time object
\scheme{time-duration}, to time object \var{t1}, producing a new time object
\var{t3} with the same type as \var{t1}.
\scheme{subtract-duration} subtracts time object \var{t2} which must be
of type \scheme{duration}, from time object \var{t1}, producing a new
of type \scheme{time-duration}, from time object \var{t1}, producing a new
time object \var{t3} with the same type as \var{t1}.
SRFI~19 also names destructive versions of these operators: