## Major update of the library was released on Jan, 17th 2016.

### Extensive support for the prime numbers:

- new class
**PrimesCache**in mathcollection - MathFunctions extended with
**primality test** **ispr(n)**-**Primality test**function supported in expressions**Pi(n)**-**Prime Counting**function supported in expressions- mXparser.initPrimesCache() methods (and others) to
**initialize prime numbers cache**

### Some special functions supported

**Ei(x)**-**Exponential integral**function supported in expressions**li(x)**-**Logarithmic integral**function supported in expressions**Li(x)**-**Offset logarithmic integral**function supported in expressions

### New constants

**[G]**-**Gompertz Constant**OEIS A073003 supported in expressions**[li2]**-**li(2)**A069284 - supported in expressions

### Multithreading performance tests

**Default number of cores**taken from the environment- Possibility to
**change number of default threads** - PerformanceTests.start(int threadsNum)
- mXparser.setThreadsNumber(int threadsNumber)

### New regression tests to cover new functionalities

## Download mXparser-v.2.3.0

Enjoy 🙂

*Mariusz Gromada*

Can you suggest me regarding string comparisons in mx parsor formula

Unfortunately mXparser does not support string manipulation. This lib is a math processor only.