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This is achieved by setting mantissa and exponent values for the relevant SBE datatypes (DecimalQtyNULL and PriceNULL) such that the original value is preserved exactly.
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| title | Fractional Trailing Zeros |
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A feature of FIX protocol interfaces (vs binary APIs) is that they involve an integer to string conversion when constructing the message. The way this is performed varies not only across venues, but also across individual fields or message types.
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Note that DecimalQtyNULL and PriceNULL may both be used to represent negative values:
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