/*
* Constructs a new {@code MathContext} with the specified precision and
* with the specified rounding mode. If the precision passed is zero, then
* this implies that the computations have to be performed exact, the
* rounding mode in this case is irrelevant.
*
* @param precision
* the precision for the new {@code MathContext}.
* @param roundingMode
* the rounding mode for the new {@code MathContext}.
* @throws IllegalArgumentException
* if {@code precision < 0}.
* @throws NullPointerException
* if {@code roundingMode} is {@code null}.
*/
public MathContext(int precision, RoundingMode roundingMode)
{
if (precision < 0)
{
// math.0C=Digits < 0
throw new java.lang.IllegalArgumentException("Digits < 0"); //$NON-NLS-1$
}
if (roundingMode == null)
{
// math.0D=null RoundingMode
throw new java.lang.NullPointerException("null RoundingMode"); //$NON-NLS-1$
}
this.precision = precision;
this.roundingMode = roundingMode;
}
/*
* Constructs a new {@code MathContext} from a string. The string has to
* specify the precision and the rounding mode to be used and has to follow
* the following syntax: "precision=<precision> roundingMode=<roundingMode>"
* This is the same form as the one returned by the {@link #toString}
* method.
*
* @param val
* a string describing the precision and rounding mode for the
* new {@code MathContext}.
* @throws IllegalArgumentException
* if the string is not in the correct format or if the
* precision specified is < 0.
*/
public MathContext(String val)
{
char[] charVal = val.toCharArray();
int i; // Index of charVal
int j; // Index of chRoundingMode
int digit; // It will contain the digit parsed
if ((charVal.Length < 27) || (charVal.Length > 45))
{
// math.0E=bad string format
throw new java.lang.IllegalArgumentException("bad string format"); //$NON-NLS-1$
}
// Parsing "precision=" String
for (i = 0; (i < chPrecision.Length) && (charVal[i] == chPrecision[i]); i++)
{
;
}
if (i < chPrecision.Length)
{
// math.0E=bad string format
throw new java.lang.IllegalArgumentException("bad string format"); //$NON-NLS-1$
}
// Parsing the value for "precision="...
digit = java.lang.Character.digit(charVal[i], 10);
if (digit == -1)
{
// math.0E=bad string format
throw new java.lang.IllegalArgumentException("bad string format"); //$NON-NLS-1$
}
this.precision = this.precision * 10 + digit;
i++;
do
{
digit = java.lang.Character.digit(charVal[i], 10);
if (digit == -1)
{
if (charVal[i] == ' ')
{
// It parsed all the digits
i++;
break;
}
// It isn't a valid digit, and isn't a white space
// math.0E=bad string format
throw new java.lang.IllegalArgumentException("bad string format"); //$NON-NLS-1$
}
// Accumulating the value parsed
this.precision = this.precision * 10 + digit;
if (this.precision < 0)
{
// math.0E=bad string format
throw new java.lang.IllegalArgumentException("bad string format"); //$NON-NLS-1$
}
i++;
} while (true);
// Parsing "roundingMode="
for (j = 0; (j < chRoundingMode.Length) &&
(charVal[i] == chRoundingMode[j]); i++, j++)
{
;
}
if (j < chRoundingMode.Length)
{
// math.0E=bad string format
throw new java.lang.IllegalArgumentException("bad string format"); //$NON-NLS-1$
}
// Parsing the value for "roundingMode"...
this.roundingMode = RoundingMode.valueOf(java.lang.StringJ.valueOf(charVal, i, charVal.Length - i).ToString());
}
/**
* Constructs a new {@code MathContext} from a string. The string has to
* specify the precision and the rounding mode to be used and has to follow
* the following syntax: "precision=<precision> roundingMode=<roundingMode>"
* This is the same form as the one returned by the {@link #toString}
* method.
*
* @param val
* a string describing the precision and rounding mode for the
* new {@code MathContext}.
* @throws IllegalArgumentException
* if the string is not in the correct format or if the
* precision specified is < 0.
*/
public MathContext(String val)
{
char[] charVal = val.toCharArray();
int i; // Index of charVal
int j; // Index of chRoundingMode
int digit; // It will contain the digit parsed
if ((charVal.Length < 27) || (charVal.Length > 45)) {
// math.0E=bad string format
throw new java.lang.IllegalArgumentException("bad string format"); //$NON-NLS-1$
}
// Parsing "precision=" String
for (i = 0; (i < chPrecision.Length) && (charVal[i] == chPrecision[i]); i++) {
;
}
if (i < chPrecision.Length) {
// math.0E=bad string format
throw new java.lang.IllegalArgumentException("bad string format"); //$NON-NLS-1$
}
// Parsing the value for "precision="...
digit = java.lang.Character.digit(charVal[i], 10);
if (digit == -1) {
// math.0E=bad string format
throw new java.lang.IllegalArgumentException("bad string format"); //$NON-NLS-1$
}
this.precision = this.precision * 10 + digit;
i++;
do {
digit = java.lang.Character.digit(charVal[i], 10);
if (digit == -1) {
if (charVal[i] == ' ') {
// It parsed all the digits
i++;
break;
}
// It isn't a valid digit, and isn't a white space
// math.0E=bad string format
throw new java.lang.IllegalArgumentException("bad string format"); //$NON-NLS-1$
}
// Accumulating the value parsed
this.precision = this.precision * 10 + digit;
if (this.precision < 0) {
// math.0E=bad string format
throw new java.lang.IllegalArgumentException("bad string format"); //$NON-NLS-1$
}
i++;
} while (true);
// Parsing "roundingMode="
for (j = 0; (j < chRoundingMode.Length)
&& (charVal[i] == chRoundingMode[j]); i++, j++) {
;
}
if (j < chRoundingMode.Length) {
// math.0E=bad string format
throw new java.lang.IllegalArgumentException("bad string format"); //$NON-NLS-1$
}
// Parsing the value for "roundingMode"...
this.roundingMode = RoundingMode.valueOf(java.lang.StringJ.valueOf(charVal, i,charVal.Length - i).ToString());
}
/**
* Constructs a new {@code MathContext} with the specified precision and
* with the specified rounding mode. If the precision passed is zero, then
* this implies that the computations have to be performed exact, the
* rounding mode in this case is irrelevant.
*
* @param precision
* the precision for the new {@code MathContext}.
* @param roundingMode
* the rounding mode for the new {@code MathContext}.
* @throws IllegalArgumentException
* if {@code precision < 0}.
* @throws NullPointerException
* if {@code roundingMode} is {@code null}.
*/
public MathContext(int precision, RoundingMode roundingMode)
{
if (precision < 0) {
// math.0C=Digits < 0
throw new java.lang.IllegalArgumentException("Digits < 0"); //$NON-NLS-1$
}
if (roundingMode == null) {
// math.0D=null RoundingMode
throw new java.lang.NullPointerException("null RoundingMode"); //$NON-NLS-1$
}
this.precision = precision;
this.roundingMode = roundingMode;
}
