how do i set a math context?

[boxxxie]

it's from java.math, but i need to use it in the bigdecimal class.

var currencyContext = new bigdecimal.MathContext(2)
TypeError: Object 2 has no method 'gC'

[boxxxie]

enum contexts are giving me problems too.

var currencyContext = bigdecimal.MathContext.DECIMAL128;
undefined
bigdecimal.BigDecimal("123",currencyContext).toString()
java.lang.RuntimeException: Unknown call signature for obj = new java.math.BigDecimal: string function

[jhs]

Interesting. Which browser or Javascript engine are you using? Thanks!

[boxxxie]

Chrome. On ubuntu 11.10 I'll test on FireFox tomorrow. I found a work around and ill post it tomorrow.

[fsateler]

I'm having the same issue, node on linux

> process.versions
{ node: '0.6.16',
  v8: '3.8.9.16',
  ares: '1.7.5',
  uv: '0.6',
  openssl: '1.0.1b' }

[chrismeyersfsu]

Has anyone solution / workaround been found ?

[MikeMcl]

@chrismeyersfsu

Oddly, MathContext only seems to accept strings:

var x = new BigDecimal('5');
var y = new BigDecimal('3');   

var mc = new MathContext('precision=5 roundingMode=HALF_UP');
x.divide( y, mc );    // '1.6667'    

// A precision of 16 digits and rounding mode HALF_EVEN.
// Notice that DECIMAL64 is a function.
x.divide( y, MathContext.DECIMAL64() );    // 1.666666666666667    

// Two decimal places and rounding mode ROUND_HALF_UP.
x.divide( y, 2, 4 );    // '1.67'

// DOWN is a function, but ROUND_DOWN isn't.
x.divide( y, 6, RoundingMode.DOWN() );    // '1.666666'    
x.divide( y, 6, BigDecimal.ROUND_DOWN );    // '1.666666'