Mathcad vs Prime rounding

Forum|Forum|9 years ago
November 20, 2016
2 replies
5004 views

In mathcad 15:

The answer is as expected. In Prime there are rounding issues. How do I eliminate this rounding?

PRIME VS MATHCAD.png

Other

Best answer by MJG

Change the result formatting to decimal.

Formatting -> Results -> change "General" to "Decimal"

F

Fred_Kohlhepp

23-Emerald I

I believe this is an artifact of "zero tolerance" setting; there is always calculation error, and a setting below which small numbers are not displayed. 10^-16 is pretty small!

P

ppal_255687

Author

18-Opal

Pretty small is not good enough. Zero is what we are after. Pretty small leaves a lot of clutter on the work sheet.

L

LucMeekes

23-Emerald IV

This occurs due to differences in 'zero threshold' settings between Prime and Mathcad, like Fred indicated.

In Mathcad (no Prime) you can set the 'zero threshold' value to an exponent (of 10) and values that are within that distance from zero are displayed as 0. The range for 'zero threshold' is 0 to 307 and the default is 15, so values between + and - 10^-15 are displayed as 0.

In Prime (express) I can find no control to set a zero threshold, This means that any value different from 0 that can be reprepresented withing the floating point range is shown as is: