## javascript – ceiling of a dollar amount

So I am adding and subtracting floats in javascript, and I need to know how to always take the ceiling of any number that has more than 3 decimal places. For example:

3.19 = 3.19

3.191 = 3.20

3….

## PHP Convert String into Float/Double

I have list of string (size in bytes), I read those from file. Let say one of the string is 2968789218, but when I convert it to float it become 2.00.

This is my code so far :

\$string = “2968789218”;…

## How can I convert four characters into a 32-bit IEEE-754 float in Perl?

I have a project where a function receives four 8-bit characters and needs to convert the resulting 32-bit IEEE-754 float to a regular Perl number. Seems like there should be a faster way than the …

## Is `double` guaranteed by C++03 to represent small integers exactly?

Does the C++03 standard guarantee that sufficiently small non-zero integers are represented exactly in double? If not, what about C++11? Note, I am not assuming IEEE compliance here.

I suspect that …

## `std::sin` is wrong in the last bit

I am porting some program from Matlab to C++ for efficiency. It is important for the output of both programs to be exactly the same (**).

I am facing different results for this operation:

std::sin(0….

## What’s the right way to parseFloat in Java

I notice some issues with the Java float precision

Float.parseFloat(“0.0065”) – 0.001 // 0.0055000000134110451
new Float(“0.027”) – 0.001 // 0.02600000000700354575

## SQL set floating point precision

For a SQL int that is being converted to a float, how do I set the precision of the floating point number?

This is the selection I would like to truncate to two or 3 decimal places:

AVG(Cast(e….

## Datatype to Store Longitude/Latitude in Mysql

‘43.005895’,’-71.013202′
Trying to use:

INSERT INTO table(fanDetLocZip, fanDetLocCity, fanDetLocState, fanDetLocLat, fanDetLocLong, fanDetLocTZ, fanDetLocDST)
VALUES(00210, ‘Portsmouth’, ‘NH’, ’43….

## How do I handle byte order differences when reading/writing floating-point types in C?

I’m devising a file format for my application, and I’d obviously like for it to work on both big-endian and little-endian systems. I’ve already found working solutions for managing integral types …

## How to deal with strange rounding of floats in PHP

As we all know, floating point arithmetic is not always completely accurate, but how do you deal with its inconsistencies?

As an example, in PHP 5.2.9: (this doesn’t happen in 5.3)

echo round(14….