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30 lines
1.2 KiB
C++
30 lines
1.2 KiB
C++
// -*- c++ -*-
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#ifndef DOUBLE_CONVERSION_FIXED_DTOA_H_
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#define DOUBLE_CONVERSION_FIXED_DTOA_H_
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#include "third_party/double-conversion/utils.h"
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// clang-format off
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namespace double_conversion {
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// Produces digits necessary to print a given number with
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// 'fractional_count' digits after the decimal point.
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// The buffer must be big enough to hold the result plus one terminating null
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// character.
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//
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// The produced digits might be too short in which case the caller has to fill
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// the gaps with '0's.
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// Example: FastFixedDtoa(0.001, 5, ...) is allowed to return buffer = "1", and
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// decimal_point = -2.
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// Halfway cases are rounded towards +/-Infinity (away from 0). The call
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// FastFixedDtoa(0.15, 2, ...) thus returns buffer = "2", decimal_point = 0.
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// The returned buffer may contain digits that would be truncated from the
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// shortest representation of the input.
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//
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// This method only works for some parameters. If it can't handle the input it
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// returns false. The output is null-terminated when the function succeeds.
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bool FastFixedDtoa(double v, int fractional_count,
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Vector<char> buffer, int* length, int* decimal_point);
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} // namespace double_conversion
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#endif // DOUBLE_CONVERSION_FIXED_DTOA_H_
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