[PATCH v11] tests for fenv.h functions

Gedare Bloom gedare at rtems.org
Fri Apr 3 18:54:43 UTC 2020


On Fri, Apr 3, 2020 at 12:35 PM Vaibhav Gupta <vaibhav.varodek at gmail.com> wrote:
>
> On Fri, 27 Mar 2020 at 22:35, Eshan dhawan <eshandhawan51 at gmail.com> wrote:
> >
> > ---
> >  testsuites/psxtests/psxfenv01/init.c        | 88 ++++++++++++++++-----
> >  testsuites/psxtests/psxfenv01/psxfenv01.doc |  9 ++-
> >  testsuites/psxtests/psxfenv01/psxfenv01.scn |  4 -
> >  3 files changed, 76 insertions(+), 25 deletions(-)
> >
> > diff --git a/testsuites/psxtests/psxfenv01/init.c b/testsuites/psxtests/psxfenv01/init.c
> > index cdb0fa596e..cfa31d6a16 100644
> > --- a/testsuites/psxtests/psxfenv01/init.c
> > +++ b/testsuites/psxtests/psxfenv01/init.c
> > @@ -6,6 +6,7 @@
> >  /*
> >   * SPDX-License-Identifier: BSD-2-Clause
> >   *
> > + * Copyright (C) 2020 Eshan Dhawan
> >   * Copyright (C) 2019 Vaibhav Gupta
> >   *
> >   * Redistribution and use in source and binary forms, with or without
> > @@ -46,11 +47,12 @@
> >  #include <string.h>
> >  #include <rtems/test.h>
> >  #include <tmacros.h>
> > +#include <float.h>
> >
> >  const char rtems_test_name[] = "PSXFENV 01";
> >
> >  /* forward declarations to avoid warnings */
> > -rtems_task Init(rtems_task_argument ignored);
> > +rtems_task Init( rtems_task_argument ignored );
> >
> >  /* Test Function Begins */
> >  rtems_task Init(rtems_task_argument ignored)
> > @@ -62,40 +64,90 @@ rtems_task Init(rtems_task_argument ignored)
> >
> >    /*
> >     * 'FE_ALL_EXCEPT' will be defined only when 'feclearexcept()',
> > -   * 'fegetexceptflag()', 'feraiseexcept()', 'fesetexceptflag()' and
> > -   * 'fetestexcept()' functions are supported by the architecture.
> > +   * fegetexceptflag() , feraiseexcept(), fesetexceptflag() and
> > +   * fetestexcept() functions are supported by the architecture.
> >     * Hence their testcases can be wrapped under #ifdef and #endif.
> >     */
> >    #ifdef FE_ALL_EXCEPT /* floating-point exceptions */
> This line is referred below.
> > -    puts( "fesetenv(FE_DFL_ENV)." );
> > -    r = fesetenv(FE_DFL_ENV);
> > -    if (r)
> > -      printf("fesetenv ==> %d\n", r);
> > +    r = fesetenv( FE_DFL_ENV );
> > +    if ( r ) {
> > +      printf( "fesetenv ==> %d\n", r);
> > +    }
> >      rtems_test_assert( r == 0 );
> >
> > -    /* Test 'feclearexcept()' and 'fetestexcept()' in one go. */
> > -    puts( "feclearexcept(FE_ALL_EXCEPT)." );
> > -    r = feclearexcept(FE_ALL_EXCEPT);
> > -    if (r)
> > -      printf("feclearexcept ==> 0x%x\n", r);
> > +    /* Test feclearexcept() and fetestexcept() in one go. */
> > +    r = feclearexcept( FE_ALL_EXCEPT );
> > +    if ( r ) {
> > +      printf( "feclearexcept ==> 0x%x\n", r );
> > +    }
> >      rtems_test_assert( r == 0 );
> >
> >      r = fetestexcept( FE_ALL_EXCEPT );
> > -    if (r)
> > -      printf("fetestexcept ==> 0x%x\n", r);
> > +    if ( r ) {
> > +      printf( "fetestexcept ==> 0x%x\n", r );
> > +    }
> >      rtems_test_assert( r == 0 );
> >
> > -    /* Test 'FE_DIVBYZERO' */
> > -    puts( "Divide by zero and confirm fetestexcept()" );
> > +    /* Test 'FE_DIVBYZERO'
> > +     *Divide by zero and confirm fetestexcept() */
> >      a = 0.0;
> >      b = 1.0;
> >      c = b/a;
> >      (void) c;
> > +    /* Test fegetexceptflag() and fesetexceptflag() */
> > +    r = fegetexceptflag( &excepts, FE_ALL_EXCEPT );
> > +    if ( r ) {
> > +      printf( "fegetexceptflag ==> 0x%x\n", r );
> > +    }
> > +    rtems_test_assert( r == 0 );
> >
> > -    fegetexceptflag(&excepts,FE_ALL_EXCEPT);
> > +    r = fesetexceptflag( &excepts, FE_ALL_EXCEPT );
> > +    if ( r ) {
> > +      printf( "fesetexceptflag ==> 0x%x\n", r );
> > +    }
> > +    rtems_test_assert( r == 0 );
> >
> > +    /* Test for fegetround() and fesetround()
> > +     * They have four main macros to be tested separated by ifdef
> > +     * Since not all architectures support them
> > +     * The test case gets and sets the rounding directions */
> > +#ifdef FE_TONEAREST
> Correct the Indentation. This and below conditional directives are
> contained inside above #ifdef directive.
> Also, like above, the best practice is to provide a
> comment for the both opening and closing conditional directives.
> (#ifdef and #endif).
> Ex: When you open-
> #ifdef xyz /* 3-5 words description */
> ..
> ....
> #endif /* same description */
>
> This helps developers to understand which closing directive
> belongs to which opening directive. Easy to understand.
> Indentation too for same reason.
>

Good advice, although I'm not sure if we have these 2 things in our
conventions yet: nesting CPP conditional blocks, and comments on CPP
conditional blocks?

> --Vaibhav Gupta
> > +    rtems_test_assert( fegetround() == FE_TONEAREST );
> > +#endif
> > +#ifdef FE_TOWARDZERO
> > +  r = fesetround( FE_TOWARDZERO );
> > +  if ( r ) {
> > +      printf( "fesetround ==> 0x%x\n", r );
> > +    }
> > +  rtems_test_assert( r == 0 );
> > +  rtems_test_assert( fegetround() == FE_TOWARDZERO );
> > +#endif
> > +#ifdef FE_DOWNWARD
> > +  r = fesetround( FE_DOWNWARD );
> > +  if ( r ) {
> > +      printf( "fesetround ==> 0x%x\n", r );
> > +    }
> > +  rtems_test_assert( r == 0 );
> > +  rtems_test_assert( fegetround() == FE_DOWNWARD );
> > +#endif
> > +#ifdef FE_UPWARD
> > +  r = fesetround( FE_UPWARD );
> > +  if ( r ) {
> > +      printf( "fesetround ==> 0x%x\n", r );
> > +    }
> > +  rtems_test_assert( r == 0 );
> > +  rtems_test_assert( fegetround() == FE_UPWARD );
> > +#endif
> > +#ifdef FE_TONEAREST
> > +  r = fesetround( FE_TONEAREST );
> > +  if ( r ) {
> > +      printf( "fesetround ==> 0x%x\n", r );
> > +    }
> > +  rtems_test_assert( r == 0 );
> > +#endif
> > +
> >  #ifdef FE_DIVBYZERO
> > -    r = feraiseexcept(FE_DIVBYZERO);
> > +    r = feraiseexcept( FE_DIVBYZERO ) ;
> >      rtems_test_assert( fetestexcept( FE_DIVBYZERO ) );
> >  #endif
> >
> > diff --git a/testsuites/psxtests/psxfenv01/psxfenv01.doc b/testsuites/psxtests/psxfenv01/psxfenv01.doc
> > index 3aa7757496..52d9fd19c7 100644
> > --- a/testsuites/psxtests/psxfenv01/psxfenv01.doc
> > +++ b/testsuites/psxtests/psxfenv01/psxfenv01.doc
> > @@ -1,4 +1,4 @@
> > -#  COPYRIGHT (c) 2019
> > +#  COPYRIGHT (c) 2019
> >  #  On-Line Applications Research Corporation (OAR).
> >  #
> >  # SPDX-License-Identifier: BSD-2-Clause
> > @@ -12,9 +12,12 @@ Directives:
> >    fesetenv
> >    feclearexcept
> >    fetestexcept
> > -  texceptflag
> >    feraiseexcept
> > -
> > +  fesetexeptflag
> > +  fegetexeptflag
> > +  fegetround
> > +  fesetround
> > +
> >  Concepts:
> >
> >  + This test exercises the fenv.h methods.
> > diff --git a/testsuites/psxtests/psxfenv01/psxfenv01.scn b/testsuites/psxtests/psxfenv01/psxfenv01.scn
> > index 21395e6712..6ea3bc255e 100644
> > --- a/testsuites/psxtests/psxfenv01/psxfenv01.scn
> > +++ b/testsuites/psxtests/psxfenv01/psxfenv01.scn
> > @@ -1,7 +1,3 @@
> >  *** BEGIN OF TEST PSXFENV 01 ***
> > -fesetenv(FE_DFL_ENV).
> > -feclearexcept(FE_ALL_EXCEPT).
> > -Divide by zero and confirm fetestexcept()
> > -
> >  *** END OF TEST PSXFENV 01 ***
> >
> > --
> > 2.17.1
> >
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> > devel at rtems.org
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