Hi,
Holger wrote:
> The resolution of the time! datatype is one nanosecond. To get
> the current date/time with the highest possible resolution provided
> by the operating system use now/precise (with current experimentals
> only). If you only need the time, without the date, use now/precise/time.
>
> The exact resolution depends on the platform, but is one microsecond
> in most cases.
>
> --
> Holger Kruse
> [EMAIL PROTECTED]
>
> --
I am including my Time-tick function, which I used to find out, that the
resolution of my computer timer is 55 milliseconds (a notebook with MS
Windows 95). Warning! Works only with Rebol/Core 2.4.39.3.1 or newer.
Regards
Ladislav
seconds: func [
{Compute difference between dates in seconds}
a [date!] "first date"
b [date!] "second date"
] [
b - a * 86400 + (to decimal! b/time) - (to decimal! a/time) +
(b/zone/hour - a/zone/hour) * 3600
]
time-tick: function [
{
Time the clock tick for a computer.
Works reliably,
if the execution time
of the innermost loop block
is shorter than the clock tick time,
otherwise it gives the innermost loop block
execution time instead.
}
accuracy [decimal!]
] [
guess count start time result prev cur ticks
] [
guess: 0
count: 1
while [
ticks: 0
start: prev: now/precise
loop :count [
if :prev <> cur: now/precise [
ticks: :ticks + 1
prev: :cur
]
]
time: seconds start cur
result: 0
any [
ticks <= 0
(
result: time / ticks
(abs result - guess) / result + (3 / ticks) > accuracy
)
]
][
guess: result
count: count * 2
]
result
]
--
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