#floating-point

i hate how close these two lines are

it's awful

you can literally treat a logarithm as if it was a number in scientific notation where the whole part is the exponent and the fractional part plus one is the mantissa and it's not even that bad

Floating-Point in Java: Representation, Comparison, Equality & A Few Shockers

Floating-point in Java, as in any other modern day programming language, is a complex subject. The versatility, power and the complexity of floating-point numbers is cloaked in innocent looking, simple digits. To harness the real power of floating-point numbers and to use them correctly in Java, it is essential to understand how they are represented internally in JVM and how they are so very…

Resolved: How to convert string into float in javascript? #answer #it #programming

How to convert string into float in javascript?

I am trying to parse two values from a datagrid. The fields are numeric, and when they have a comma (ex. 554,20), I can’t get the numbers after the comma. I’ve tried parseInt and parseFloat. How can I do this?

Answer [by Wadih M.]: How to convert string into float in javascript?

Replace the comma with a dot.

This will only return 554:

var value =…

Resolved: Make a float only show two decimal places #it #programming #dev

Make a float only show two decimal places

I have the value 25.00 in a float, but when I print it on screen it is 25.0000000. How can I display the value with only two decimal places?

Answer [by Andrew Grant]: Make a float only show two decimal places

It is not a matter of how the number is stored, it is a matter of how you are displaying it. When converting it to a string you must round to the…

How to: Difference between float and double #programming #answer #development

Difference between float and double

I know, I’ve read about the difference between double precision and single precision, etc. But they should give the same results on most cases right?

I was solving a problem on a programming contest and there were calculations with floating point numbers that were not really big, so I decided to use float instead of double, and I checked it – I was getting the…

Fix: Format number to always show 2 decimal places #fix #development #computers

Format number to always show 2 decimal places

I would like to format my numbers to always display 2 decimal places, rounding where applicable.

Examples:

number display - 1 1.00 1.341 1.34 1.345 1.35

I have been using this:

parseFloat(num).toFixed(2);

But it’s displaying 1 as 1, rather than 1.00.

Answer [by samwise]: Format number to always show 2 decimal places

Are you looking for floor?

var…

Fix: round() for float in C++ #programming #development #solution

round() for float in C++

I need a simple floating point rounding function, thus:

double round(double); round(0.1) = 0 round(-0.1) = 0 round(-0.9) = -1

I can find ceil() and floor() in the math.h – but not round().

Is it present in the standard C++ library under another name, or is it missing??

Answer [by MSN]: round() for float in C++

It’s usually implemented as floor(value + 0.5).

Edit: and…