Category talk:Wren-big: Difference between revisions
Content added Content deleted
(→Source code: Bug fix.) |
(→Source code: Added zero fill option to BigRat.toDecimal method.) |
||
| Line 1,532: | Line 1,532: | ||
// If 'rounded' is true, the value is rounded to that number of places with halves |
// If 'rounded' is true, the value is rounded to that number of places with halves |
||
// being rounded away from zero. Otherwise the value is truncated to that number of places. |
// being rounded away from zero. Otherwise the value is truncated to that number of places. |
||
// If 'zfill' is true, any unfilled decimal places are filled with zeros. |
|||
toDecimal(digits, rounded) { |
toDecimal(digits, rounded, zfill) { |
||
if (!(digits is Num && digits.isInteger && digits >= 0)) { |
if (!(digits is Num && digits.isInteger && digits >= 0)) { |
||
Fiber.abort(" |
Fiber.abort("Digits must be a non-negative integer") |
||
} |
} |
||
if (rounded.type != Bool) Fiber.abort("Rounded must be true or false.") |
|||
if (zfill.type != Bool) Fiber.abort("Zfill must be true or false.") |
|||
var qr = _n.divMod(_d) |
var qr = _n.divMod(_d) |
||
var intPart = qr[0].toString |
var intPart = qr[0].toString |
||
| Line 1,558: | Line 1,561: | ||
} |
} |
||
if (digits < 1) decPart = "" |
if (digits < 1) decPart = "" |
||
if (decPart == "") return intPart |
if (decPart == "") return intPart + (zfill ? "." + ("0" * digits) : "") |
||
return intPart + "." + decPart |
return intPart + "." + decPart + (zfill ? ("0" * (digits - decPart.count)) : "") |
||
} |
} |
||
// Convenience versions of the above which use default values for |
// Convenience versions of the above which use default values for some or all parameters. |
||
toDecimal(digits) { toDecimal(digits, |
toDecimal(digits, rounded) { toDecimal(digits, rounded, false) } // never trailing zeros |
||
toDecimal { toDecimal( |
toDecimal(digits) { toDecimal(digits, true, false) } // always rounded, never trailing zeros |
||
toDecimal { toDecimal(14, true, false) } // 14 digits, always rounded, never trailing zeros |
|||
// Returns a string represenation of this instance in the form "i_n/d" where 'i' is an integer. |
// Returns a string represenation of this instance in the form "i_n/d" where 'i' is an integer. |
||