IEC 61691-3-2:2001

FOREWORD
INTRODUCTION
1. Overview
   1.1 Scope
   1.2 Constants, types, and functions provided
   1.3 Conformance with this standard
2. References
3. Package declarations
   3.1 MATH_REAL
   3.2 MATH_COMPLEX
Annex A (informative) Using the MATH_REAL and
        MATH_COMPLEX packages
      A.1 Predefined data types, operators, and precision
          for MATH_REAL
      A.2 Use of constants in MATH_REAL
      A.3 Use and constraints of pseudo-random number
          generator in MATH_REAL
      A.4 Precision across different platforms
      A.5 Handling of overflow/underflow conditions
      A.6 Testbench for the packages
      A.7 Compatibility with VHDL analog standard
      A.8 Overloading side effect
      A.9 Synthesizability of functions
Annex B (informative) Package bodies

This set of packages provides a standard for the declaration of most frequently used real and complex elementary functions required for numerically oriented modeling applications. Use of these packages with their defined data types, constants, and functions is intended to provide a mechanism for writing VHDL models (compliant with IEEE Std 1076-1993) that are portable and interoperable with other VHDL models adhering to this standard. The standard serves a broad class of applications with reasonable ease of use and requires implementations that are of high quality. This standard includes package bodies, as described in annex B, which are available in electronic format either on a diskette affixed to the back cover, or as a downloadable file from the IEC Web Store.