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Displaying all the decimal digits of a floating point number

Mallikarjun032

Hi,

I would like to know if it's possible to display all the decimal digits of a floating point number.

For example, if I set "a=1.23456789", and when I use the expression "a", only 6 decimal digits are displayed, like "1.234567".

Is it possible to display all the decimal digits of a floating point number?

Thanks,

Mallikarjun

Parents

  • Hi Mallikarjun,

    If you use:

    sstatus(fullPrecision t)

    Then the default print representation of floating point numbers extends to 16 significant digits rather than 7 by default. Note that double precision floating point numbers have just under 16 significant digits (stored as a 53 bit mantissa) so there is no more accuracy than that. You can also use the precision controls with printf (e.g printf("%.16g\n" num) or printf("%8.3f\n" num) - with %g it is the number of significant digits, with %f it's the number of decimal places to the right of the point)

    Regards,

    Andrew

Reply

  • Hi Mallikarjun,

    If you use:

    sstatus(fullPrecision t)

    Then the default print representation of floating point numbers extends to 16 significant digits rather than 7 by default. Note that double precision floating point numbers have just under 16 significant digits (stored as a 53 bit mantissa) so there is no more accuracy than that. You can also use the precision controls with printf (e.g printf("%.16g\n" num) or printf("%8.3f\n" num) - with %g it is the number of significant digits, with %f it's the number of decimal places to the right of the point)

    Regards,

    Andrew

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