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Subject: [OASIS Issue Tracker] (ODATA-771) Exponential notation for Edm.Decimal values in JSON payloads
[ https://issues.oasis-open.org/browse/ODATA-771?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=58550#comment-58550 ] Evan Ireland edited comment on ODATA-771 at 2/25/15 1:53 AM: ------------------------------------------------------------- Also consider that Term Org.OData.Measures.V1.Scale has a maximum value of 255 (and cannot be negative). So its applicability to a DECFLOAT stored in a Property of type Edm.Decimal would be in doubt. It seems clear that Edm.Decimal is, by design, fundamentally different from decimal floating point. was (Author: evan.ireland): Also consider that Term Org.OData.Measures.V1.Scale has a maximum value of 255 (and cannot be nagative). So its applicability to a DECFLOAT stored in a Property of type Edm.Decimal would be in doubt. It seems clear that Edm.Decimal is, by design, fundamentally different from decimal floating point. > Exponential notation for Edm.Decimal values in JSON payloads > ------------------------------------------------------------ > > Key: ODATA-771 > URL: https://issues.oasis-open.org/browse/ODATA-771 > Project: OASIS Open Data Protocol (OData) TC > Issue Type: Improvement > Components: OData JSON Format > Affects Versions: V4.0_ERRATA02 > Environment: [Proposed] > Reporter: Ralf Handl > Fix For: V4.0_ERRATA03 > > > IEEE754 defines the DECFLOAT data type for high-precision decimal arithmetic. They have 16 or 34 decimal digit mantissas and exponents between -383 and +384 or -6143 and +6144. > The correct, lossless representation of DECFLOAT values is an Edm.Decimal with unspecified precision and variable scale. > The OData JSON Format represents Edm.Decimal values as JSON numbers, and JSON numbers allow exponential notation, so > "VeryLittle":1.4e-6143 > should be valid in JSON payloads. -- This message was sent by Atlassian JIRA (v6.2.2#6258)
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