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modifying/​rounding/a​proximatin​g a number

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i need a way to modify a number a=2.65987 into 2.6598 i tried round /fprintf , but both display as 2.6599 ,i need it badly ,i could just pop it out of nowhere by substracting 0.00007 but that's not helping .

Accepted Answer

Star Strider
Star Strider on 30 Oct 2020
One option:
c = floor(a*1E4)/1E4
producing:
c =
2.6598
.
  6 Comments
Star Strider
Star Strider on 31 Oct 2020
Interesting!
Check the link I posted — the link information is correct.
While I would normally suggest that the difference between the two in the precision of the diaplayed numbers could account for the difference, that is not the situation here, where the display precision is not changing.

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