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* doc/lispref/os.texi (time-subtract): Doc fix.

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Paul Eggert 2020-03-07 09:30:19 -08:00
parent 72f87f8873
commit 818333c85a
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doc/lispref/os.texi
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@ -1978,10 +1978,9 @@ The result is @code{nil} if either argument is a NaN.
@defun time-subtract t1 t2 @defun time-subtract t1 t2
This returns the time difference @var{t1} @minus{} @var{t2} between This returns the time difference @var{t1} @minus{} @var{t2} between
two time values, normally as a Lisp timestamp but as a float two time values, as a Lisp time value. The result is exact and its clock
if either argument is infinite or a NaN@.
When the result is a timestamp, it is exact and its clock
resolution is no worse than the worse of its two arguments' resolutions. resolution is no worse than the worse of its two arguments' resolutions.
The result is floating-point only if it is infinite or a NaN.
If you need the difference in units If you need the difference in units
of elapsed seconds, you can convert it with @code{time-convert} or of elapsed seconds, you can convert it with @code{time-convert} or
@code{float-time}. @xref{Time Conversion}. @code{float-time}. @xref{Time Conversion}.