[PATCH v7] tests for fenv.h functions

[Eshan dhawan]

---
 testsuites/psxtests/psxfenv01/init.c | 89 ++++++++++++++++++++++------
 1 file changed, 71 insertions(+), 18 deletions(-)

diff --git a/testsuites/psxtests/psxfenv01/init.c b/testsuites/psxtests/psxfenv01/init.c
index cdb0fa596e..0ea820c523 100644
--- a/testsuites/psxtests/psxfenv01/init.c
+++ b/testsuites/psxtests/psxfenv01/init.c
@@ -46,11 +46,12 @@
 #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)
@@ -62,28 +63,31 @@ 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 */
     puts( "fesetenv(FE_DFL_ENV)." );
-    r = fesetenv(FE_DFL_ENV);
-    if (r)
+    r = fesetenv ( FE_DFL_ENV );
+    if ( r ) {
       printf("fesetenv ==> %d\n", r);
-    rtems_test_assert( r == 0 );
+    }
+    rtems_test_assert ( r == 0 );
 
-    /* Test 'feclearexcept()' and 'fetestexcept()' in one go. */
-    puts( "feclearexcept(FE_ALL_EXCEPT)." );
-    r = feclearexcept(FE_ALL_EXCEPT);
-    if (r)
+    /* 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);
-    rtems_test_assert( r == 0 );
+    }    
+    rtems_test_assert ( r == 0 );
 
-    r = fetestexcept( FE_ALL_EXCEPT );
-    if (r)
+    r = fetestexcept ( FE_ALL_EXCEPT );
+    if ( r ) {
       printf("fetestexcept ==> 0x%x\n", r);
-    rtems_test_assert( r == 0 );
+    }
+    rtems_test_assert ( r == 0 );
 
     /* Test 'FE_DIVBYZERO' */
     puts( "Divide by zero and confirm fetestexcept()" );
@@ -91,11 +95,60 @@ rtems_task Init(rtems_task_argument ignored)
     b = 1.0;
     c = b/a;
     (void) c;
-
-    fegetexceptflag(&excepts,FE_ALL_EXCEPT);
-
+    /* Test fegetexceptflag() and fesetexceptflag() */
+    r = fegetexceptflag ( &excepts, FE_ALL_EXCEPT );
+    if ( r ) {
+      printf("fegetexceptflag ==> 0x%x\n", r);
+    }
+    rtems_test_assert ( r == 0 );
+
+    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
+    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
 
-- 
2.17.1