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Numerical Precision Examples

This repository contains examples from various sources as a benchmark suite for numerical precision. This suite is for use with KLEE for numerical precision in https://github.com/fp-analysis/klee.

  • The basic directory contains basic, mainly floating-point programs. Before running, please set the KLEE_HOME variable in basic/Makefile to an appropriate value. There are four alternative ways to run KLEE for numerical precision analysis, as follows:

    1. To run KLEE for numerical precision using default options, execute the following in the basic directory:

      make <program_name>.klee
      

      where <program_name> is the name of a C program file basic/<program_name>.c.

    2. To run KLEE for numerical precision using default options but with displaying of debugging information, execute the following in the basic directory:

      make <program_name>.dklee
      

      where <program_name> is the name of a C program file basic/<program_name>.c.

    3. To run KLEE for numerical precision with loop breaking, execute the following in the basic directory:

      make <program_name>.loop
      

      where <program_name> is the name of a C program file basic/<program_name>.c.

    4. To run KLEE for numerical precision with loop breaking and with displaying of debugging information, execute the following in the basic directory:

      make <program_name>.dloop
      

      where <program_name> is the name of a C program file basic/<program_name>.c.

  • The package directory contains applications.

    • To build the bitcode files and run them using KLEE, first update the value of LLVM_COMPILER variable in package/Makefile to suit your system.
    • Change to the package directory.
      cd package
      
    • To run the the program bitcode using KLEE, say:
      make <program_name>.klee
      
      where <program_name> is either rawcaudio, rawdaudio, timing, memdjpeg, or memcjpeg.
    • To remove the KLEE output directories:
      make clean
      
    • To remove the KLEE output directories and the built application package:
      make realclean
      
  • The loops directory contains looping examples from Malardalen WCET benchmark suite without floating points and for which KLEE with numerical precision is able to infer loop trip counts.

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