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The Stata Journal
Volume 8 Number 2: pp. 255-268

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Mata Matters: Overflow, underflow and the IEEE floating–point format

Jean Marie Linhart
College Station, TX
Abstract.   Mata is Stata’s matrix language. The Mata Matters column shows how Mata can be used interactively to solve problems and as a programming language to add new features to Stata. In this quarter’s column, we investigate underflow and overflow and then delve into the details of how floating-point numbers are stored in the IEEE 754 floating-point standard. We show how to test for overflow and underflow. We demonstrate how to use the %21x format to see underflow and the %16H, %16L, %8H, and %8L formats for displaying the byte content of doubles and floats.
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View all articles with these keywords: underflow, overflow, denormalized number, normalized number, subnormal number, double precision, missing values, IEEE 754, format, binary, hexadecimal

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