choose number of significant digits in matlab for whole code











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I'm trying to format my code in such a way that a chosen number of significant digits are saved, throughout the whole code. Basically, I'm looking for something that does the same as the function round(x, d, 'significant'), but will retain this effect during calculations. Any ideas?






matlab significant-digits







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  • 2




    You are aware that the round off error is going to accumulate, right? e.g. if you are only interested in integers then 2.5 + 3.5 would be interpreted as 2 + 3 == 5 whereas the real result is 6 and (obviously) 5 ~= floor(6) so the point at which you round is important.
    – Nicky Mattsson
    4 hours ago












  • Since the OP specifically asks for this effect to be retained in calculations, I'd say it is safe to assume that they're aware of rounding issues, Nicky. On topic: check out the documentation on digits and vpa if you have access to the symbolic math toolbox. Otherwise, I would not know of a solution besides changing the precision from the standard double to, for instance, single.
    – Floris SA
    21 mins ago

















up vote
0
down vote

favorite












I'm trying to format my code in such a way that a chosen number of significant digits are saved, throughout the whole code. Basically, I'm looking for something that does the same as the function round(x, d, 'significant'), but will retain this effect during calculations. Any ideas?






matlab significant-digits







share|improve this question







New contributor




Netta Gal is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
















  • 2




    You are aware that the round off error is going to accumulate, right? e.g. if you are only interested in integers then 2.5 + 3.5 would be interpreted as 2 + 3 == 5 whereas the real result is 6 and (obviously) 5 ~= floor(6) so the point at which you round is important.
    – Nicky Mattsson
    4 hours ago












  • Since the OP specifically asks for this effect to be retained in calculations, I'd say it is safe to assume that they're aware of rounding issues, Nicky. On topic: check out the documentation on digits and vpa if you have access to the symbolic math toolbox. Otherwise, I would not know of a solution besides changing the precision from the standard double to, for instance, single.
    – Floris SA
    21 mins ago















up vote
0
down vote

favorite









up vote
0
down vote

favorite











I'm trying to format my code in such a way that a chosen number of significant digits are saved, throughout the whole code. Basically, I'm looking for something that does the same as the function round(x, d, 'significant'), but will retain this effect during calculations. Any ideas?






matlab significant-digits







share|improve this question







New contributor




Netta Gal is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.











I'm trying to format my code in such a way that a chosen number of significant digits are saved, throughout the whole code. Basically, I'm looking for something that does the same as the function round(x, d, 'significant'), but will retain this effect during calculations. Any ideas?






matlab significant-digits




matlab significant-digits






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  • 2




    You are aware that the round off error is going to accumulate, right? e.g. if you are only interested in integers then 2.5 + 3.5 would be interpreted as 2 + 3 == 5 whereas the real result is 6 and (obviously) 5 ~= floor(6) so the point at which you round is important.
    – Nicky Mattsson
    4 hours ago












  • Since the OP specifically asks for this effect to be retained in calculations, I'd say it is safe to assume that they're aware of rounding issues, Nicky. On topic: check out the documentation on digits and vpa if you have access to the symbolic math toolbox. Otherwise, I would not know of a solution besides changing the precision from the standard double to, for instance, single.
    – Floris SA
    21 mins ago
















  • 2




    You are aware that the round off error is going to accumulate, right? e.g. if you are only interested in integers then 2.5 + 3.5 would be interpreted as 2 + 3 == 5 whereas the real result is 6 and (obviously) 5 ~= floor(6) so the point at which you round is important.
    – Nicky Mattsson
    4 hours ago












  • Since the OP specifically asks for this effect to be retained in calculations, I'd say it is safe to assume that they're aware of rounding issues, Nicky. On topic: check out the documentation on digits and vpa if you have access to the symbolic math toolbox. Otherwise, I would not know of a solution besides changing the precision from the standard double to, for instance, single.
    – Floris SA
    21 mins ago










2




2




You are aware that the round off error is going to accumulate, right? e.g. if you are only interested in integers then 2.5 + 3.5 would be interpreted as 2 + 3 == 5 whereas the real result is 6 and (obviously) 5 ~= floor(6) so the point at which you round is important.
– Nicky Mattsson
4 hours ago






You are aware that the round off error is going to accumulate, right? e.g. if you are only interested in integers then 2.5 + 3.5 would be interpreted as 2 + 3 == 5 whereas the real result is 6 and (obviously) 5 ~= floor(6) so the point at which you round is important.
– Nicky Mattsson
4 hours ago














Since the OP specifically asks for this effect to be retained in calculations, I'd say it is safe to assume that they're aware of rounding issues, Nicky. On topic: check out the documentation on digits and vpa if you have access to the symbolic math toolbox. Otherwise, I would not know of a solution besides changing the precision from the standard double to, for instance, single.
– Floris SA
21 mins ago






Since the OP specifically asks for this effect to be retained in calculations, I'd say it is safe to assume that they're aware of rounding issues, Nicky. On topic: check out the documentation on digits and vpa if you have access to the symbolic math toolbox. Otherwise, I would not know of a solution besides changing the precision from the standard double to, for instance, single.
– Floris SA
21 mins ago



















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