: MISUMI : I wrote an integer square root subroutine with nothing more than a couple dozen lines of ASM, with no API calls whatsoever - and it still could onl... · 2Depending on what you want the numbers for, you might want to use fixed point numbers instead of floating point. A quick search turns up this .2I think you can just add 0.005 for precision to hundredths, 0.0005 for thousands, etc. snprintf the result with something like "%1.2f" (hundredths,...2You could save some major cycles in your posted code by just making that double t[] static, so that it's not allocating it over and over.2Try this instead: #include <cmath>double setprecision(double x, int prec) { return ceil( x * pow(10,(double)prec) - .99999)...1Using floating point (an inexact representation) means you've lost some information about the true number. You can't simply "fix" the value stored...1I'm taking at guess at what you really mean to do. I suspect you're trying to see if a string contains a decimal representation of a double to som...0As far as i see you are checking if a rounded on p points is equal b. Insted of changing a to string, make other way and change string to double-...0Old time developers trick from the dark ages of Pounds, Shilling and pence in the old country. The trick was to store the value as a whole number f...0 :