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tests/21-Aug-2018

README.txt

      1 
      2 
      3 About
      4 =====
      5 
      6 _decimal.c is a wrapper for the libmpdec library. libmpdec is a fast C
      7 library for correctly-rounded arbitrary precision decimal floating point
      8 arithmetic. It is a complete implementation of Mike Cowlishaw/IBM's
      9 General Decimal Arithmetic Specification.
     10 
     11 
     12 Build process for the module
     13 ============================
     14 
     15 As usual, the build process for _decimal.so is driven by setup.py in the top
     16 level directory. setup.py autodetects the following build configurations:
     17 
     18    1) x64         - 64-bit Python, x86_64 processor (AMD, Intel)
     19 
     20    2) uint128     - 64-bit Python, compiler provides __uint128_t (gcc)
     21 
     22    3) ansi64      - 64-bit Python, ANSI C
     23 
     24    4) ppro        - 32-bit Python, x86 CPU, PentiumPro or later
     25 
     26    5) ansi32      - 32-bit Python, ANSI C
     27 
     28    6) ansi-legacy - 32-bit Python, compiler without uint64_t
     29 
     30    7) universal   - Mac OS only (multi-arch)
     31 
     32 
     33 It is possible to override autodetection by exporting:
     34 
     35    PYTHON_DECIMAL_WITH_MACHINE=value, where value is one of the above options.
     36 
     37 
     38 NOTE
     39 ====
     40 
     41 decimal.so is not built from a static libmpdec.a since doing so led to
     42 failures on AIX (user report) and Windows (mixing static and dynamic CRTs
     43 causes locale problems and more).
     44 
     45 
     46 
     47