symbian-qemu-0.9.1-12/python-2.6.1/Modules/fpetestmodule.c
author martin.trojer@nokia.com
Fri, 31 Jul 2009 15:01:17 +0100
changeset 1 2fb8b9db1c86
permissions -rw-r--r--
Initial QEMU (symbian-qemu-0.9.1-12) import
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/*
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     ---------------------------------------------------------------------  
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    /                       Copyright (c) 1996.                           \ 
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   |          The Regents of the University of California.                 |
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   |                        All rights reserved.                           |
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   |                                                                       |
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   |   Permission to use, copy, modify, and distribute this software for   |
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   |   any purpose without fee is hereby granted, provided that this en-   |
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   |   tire notice is included in all copies of any software which is or   |
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   |   includes  a  copy  or  modification  of  this software and in all   |
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   |   copies of the supporting documentation for such software.           |
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   |                                                                       |
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   |   This  work was produced at the University of California, Lawrence   |
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   |   Livermore National Laboratory under  contract  no.  W-7405-ENG-48   |
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   |   between  the  U.S.  Department  of  Energy and The Regents of the   |
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   |   University of California for the operation of UC LLNL.              |
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   |                                                                       |
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   |                              DISCLAIMER                               |
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   |                                                                       |
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   |   This  software was prepared as an account of work sponsored by an   |
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   |   agency of the United States Government. Neither the United States   |
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   |   Government  nor the University of California nor any of their em-   |
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   |   ployees, makes any warranty, express or implied, or  assumes  any   |
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   |   liability  or  responsibility  for the accuracy, completeness, or   |
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   |   usefulness of any information,  apparatus,  product,  or  process   |
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   |   disclosed,   or  represents  that  its  use  would  not  infringe   |
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   |   privately-owned rights. Reference herein to any specific  commer-   |
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   |   cial  products,  process,  or  service  by trade name, trademark,   |
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   |   manufacturer, or otherwise, does not  necessarily  constitute  or   |
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   |   imply  its endorsement, recommendation, or favoring by the United   |
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   |   States Government or the University of California. The views  and   |
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   |   opinions  of authors expressed herein do not necessarily state or   |
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   |   reflect those of the United States Government or  the  University   |
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   |   of  California,  and shall not be used for advertising or product   |
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    \  endorsement purposes.                                              / 
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     ---------------------------------------------------------------------  
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*/
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/*
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		  Floating point exception test module.
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 */
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#include "Python.h"
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static PyObject *fpe_error;
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PyMODINIT_FUNC initfpetest(void);
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static PyObject *test(PyObject *self,PyObject *args);
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static double db0(double);
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static double overflow(double);
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static double nest1(int, double);
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static double nest2(int, double);
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static double nest3(double);
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static void printerr(double);
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static PyMethodDef fpetest_methods[] = {
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    {"test",		 (PyCFunction) test,		 METH_VARARGS},
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    {0,0}
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};
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static PyObject *test(PyObject *self,PyObject *args)
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{
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    double r;
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    fprintf(stderr,"overflow");
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    r = overflow(1.e160);
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    printerr(r);
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    fprintf(stderr,"\ndiv by 0");
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    r = db0(0.0);
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    printerr(r);
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    fprintf(stderr,"\nnested outer");
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    r = nest1(0, 0.0);
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    printerr(r);
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    fprintf(stderr,"\nnested inner");
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    r = nest1(1, 1.0);
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    printerr(r);
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    fprintf(stderr,"\ntrailing outer");
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    r = nest1(2, 2.0);
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    printerr(r);
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    fprintf(stderr,"\nnested prior");
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    r = nest2(0, 0.0);
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    printerr(r);
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    fprintf(stderr,"\nnested interior");
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    r = nest2(1, 1.0);
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    printerr(r);
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    fprintf(stderr,"\nnested trailing");
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    r = nest2(2, 2.0);
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    printerr(r);
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    Py_INCREF (Py_None);
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    return Py_None;
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}
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static void printerr(double r)
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{
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    if(r == 3.1416){
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      fprintf(stderr,"\tPASS\n");
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      PyErr_Print();
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    }else{
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      fprintf(stderr,"\tFAIL\n");
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    }
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    PyErr_Clear();
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}
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static double nest1(int i, double x)
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{
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  double a = 1.0;
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  PyFPE_START_PROTECT("Division by zero, outer zone", return 3.1416)
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  if(i == 0){
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    a = 1./x;
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martin.trojer@nokia.com
parents:
diff changeset
   119
  }else if(i == 1){
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   120
    /* This (following) message is never seen. */
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   121
    PyFPE_START_PROTECT("Division by zero, inner zone", return 3.1416)
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   122
    a = 1./(1. - x);
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   123
    PyFPE_END_PROTECT(a)
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   124
  }else if(i == 2){
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   125
    a = 1./(2. - x);
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   126
  }
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   127
  PyFPE_END_PROTECT(a)
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   128
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   129
  return a;
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   130
}
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   131
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   132
static double nest2(int i, double x)
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   133
{
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   134
  double a = 1.0;
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   135
  PyFPE_START_PROTECT("Division by zero, prior error", return 3.1416)
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   136
  if(i == 0){
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   137
    a = 1./x;
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   138
  }else if(i == 1){
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   139
    a = nest3(x);
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   140
  }else if(i == 2){
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   141
    a = 1./(2. - x);
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   142
  }
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   143
  PyFPE_END_PROTECT(a)
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   144
  return a;
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   145
}
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   146
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   147
static double nest3(double x)
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   148
{
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   149
  double result;
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   150
  /* This (following) message is never seen. */
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   151
  PyFPE_START_PROTECT("Division by zero, nest3 error", return 3.1416)
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   152
  result = 1./(1. - x);
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   153
  PyFPE_END_PROTECT(result)
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   154
  return result;
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   155
}
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   156
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   157
static double db0(double x)
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   158
{
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   159
  double a;
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   160
  PyFPE_START_PROTECT("Division by zero", return 3.1416)
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   161
  a = 1./x;
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   162
  PyFPE_END_PROTECT(a)
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   163
  return a;
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   164
}
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   165
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   166
static double overflow(double b)
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   167
{
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   168
  double a;
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   169
  PyFPE_START_PROTECT("Overflow", return 3.1416)
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   170
  a = b*b;
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   171
  PyFPE_END_PROTECT(a)
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   172
  return a;
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   173
}
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   174
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   175
PyMODINIT_FUNC initfpetest(void)
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   176
{
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   177
    PyObject *m, *d;
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   178
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   179
    m = Py_InitModule("fpetest", fpetest_methods);
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   180
    if (m == NULL)
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   181
    	return;
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   182
    d = PyModule_GetDict(m);
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   183
    fpe_error = PyErr_NewException("fpetest.error", NULL, NULL);
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   184
    if (fpe_error != NULL)
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   185
	    PyDict_SetItemString(d, "error", fpe_error);
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   186
}