20000320-1.c (main): For MIPS...

2001-01-25  Jeffrey Oldham  <oldham@codesourcery.com>

	* gcc.c-torture/execute/ieee/20000320-1.c (main): For MIPS, change
	floating point number rounding mode to round to the nearest
	representable mode.

From-SVN: r39268

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index a8352d8a3fe45d88d008a7417bff0a07e75f6772..cbe116f9b9bfbd6c7637ae118db826419cacd173 100644 (file)
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,9 @@
+2001-01-25  Jeffrey Oldham  <oldham@codesourcery.com>
+
+       * gcc.c-torture/execute/ieee/20000320-1.c (main): For MIPS, change
+       floating point number rounding mode to round to the nearest
+       representable mode.
+
 2001-01-25  Jakub Jelinek  <jakub@redhat.com>
 
        * g++.old-deja/g++.other/mangle2.C: New test.

diff --git a/gcc/testsuite/gcc.c-torture/execute/ieee/20000320-1.c b/gcc/testsuite/gcc.c-torture/execute/ieee/20000320-1.c
index 798e54256bf2ef692100403b87dc74cbdc57cfd3..274a12ebfc48166bd72178cc5209aafee4878dd0 100644 (file)
--- a/gcc/testsuite/gcc.c-torture/execute/ieee/20000320-1.c
+++ b/gcc/testsuite/gcc.c-torture/execute/ieee/20000320-1.c
@@ -1,3 +1,6 @@
+#if defined(__mips__) && defined(__sgi__)
+#include <sys/fpu.h>
+#endif /* defined(__mips__) && defined(__sgi__) */
 #include <limits.h>
 #if UINT_MAX != 4294967295u || (ULONG_LONG_MAX != 18446744073709551615ull && ULONG_MAX != 18446744073709551615ull)
 int main(void) { exit (0); }
@@ -32,6 +35,15 @@ void c(ull d, ul f)
 
 int main()
 {
+#if defined(__mips__) && defined(__sgi__)
+  /* Many MIPS chips round denormalized floating point numbers to zero
+     rather than follow the IEEE standard.  Change the rounding mode
+     to correspond to the IEEE rounding mode that rounds numbers to
+     the nearest representable mode, the most common IEEE rounding
+     mode.  */
+  set_fpc_csr(0);
+#endif /* defined(__mips__) && defined(__sgi__) */
+
   if (sizeof (float) != sizeof (ul)
       || sizeof (double) != sizeof (ull))
     exit (0);