diff options
Diffstat (limited to 'JavaScriptCore/wtf/DecimalNumber.h')
-rw-r--r-- | JavaScriptCore/wtf/DecimalNumber.h | 104 |
1 files changed, 8 insertions, 96 deletions
diff --git a/JavaScriptCore/wtf/DecimalNumber.h b/JavaScriptCore/wtf/DecimalNumber.h index 3a831b7..c42f00b 100644 --- a/JavaScriptCore/wtf/DecimalNumber.h +++ b/JavaScriptCore/wtf/DecimalNumber.h @@ -81,104 +81,16 @@ public: ASSERT(m_significand[0] != '0' || !m_exponent); } - unsigned toStringDecimal(NumberToStringBuffer buffer) - { - // Should always be at least one digit to add to the string! - ASSERT(m_precision); - UChar* next = buffer; - - // if the exponent is negative the number decimal representation is of the form: - // [<sign>]0.[<zeros>]<significand> - if (m_exponent < 0) { - unsigned zeros = -m_exponent - 1; - - if (m_sign) - *next++ = '-'; - *next++ = '0'; - *next++ = '.'; - for (unsigned i = 0; i < zeros; ++i) - *next++ = '0'; - for (unsigned i = 0; i < m_precision; ++i) - *next++ = m_significand[i]; - - return next - buffer; - } - - unsigned digitsBeforeDecimalPoint = m_exponent + 1; - - // If the precision is <= than the number of digits to get up to the decimal - // point, then there is no fractional part, number is of the form: - // [<sign>]<significand>[<zeros>] - if (m_precision <= digitsBeforeDecimalPoint) { - if (m_sign) - *next++ = '-'; - for (unsigned i = 0; i < m_precision; ++i) - *next++ = m_significand[i]; - for (unsigned i = 0; i < (digitsBeforeDecimalPoint - m_precision); ++i) - *next++ = '0'; - - return next - buffer; - } - - // If we get here, number starts before the decimal point, and ends after it, - // as such is of the form: - // [<sign>]<significand-begin>.<significand-end> - - if (m_sign) - *next++ = '-'; - for (unsigned i = 0; i < digitsBeforeDecimalPoint; ++i) - *next++ = m_significand[i]; - *next++ = '.'; - for (unsigned i = digitsBeforeDecimalPoint; i < m_precision; ++i) - *next++ = m_significand[i]; - - return next - buffer; - } + unsigned bufferLengthForStringDecimal() const; + unsigned bufferLengthForStringExponential() const; - unsigned toStringExponential(NumberToStringBuffer buffer) - { - // Should always be at least one digit to add to the string! - ASSERT(m_precision); - - UChar* next = buffer; - - // Add the sign - if (m_sign) - *next++ = '-'; - - // Add the significand - *next++ = m_significand[0]; - if (m_precision > 1) { - *next++ = '.'; - for (unsigned i = 1; i < m_precision; ++i) - *next++ = m_significand[i]; - } - - // Add "e+" or "e-" - *next++ = 'e'; - int exponent; - if (m_exponent >= 0) { - *next++ = '+'; - exponent = m_exponent; - } else { - *next++ = '-'; - exponent = -m_exponent; - } - - // Add the exponent - if (exponent >= 100) - *next++ = '0' + exponent / 100; - if (exponent >= 10) - *next++ = '0' + (exponent % 100) / 10; - *next++ = '0' + exponent % 10; - - return next - buffer; - } + unsigned toStringDecimal(UChar* buffer, unsigned bufferLength) const; + unsigned toStringExponential(UChar* buffer, unsigned bufferLength) const; - bool sign() { return m_sign; } - int exponent() { return m_exponent; } - const char* significand() { return m_significand; } // significand contains precision characters, is not null-terminated. - unsigned precision() { return m_precision; } + bool sign() const { return m_sign; } + int exponent() const { return m_exponent; } + const char* significand() const { return m_significand; } // significand contains precision characters, is not null-terminated. + unsigned precision() const { return m_precision; } private: bool m_sign; |