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authorMatthias Benkard <code@mail.matthias.benkard.de>2008-01-26 12:06:34 +0100
committerMatthias Benkard <code@mail.matthias.benkard.de>2008-01-26 12:06:34 +0100
commit181d8ded82d49d0133d9d6fd1631d9816c970bfa (patch)
treec2791efcee34197c93ed964873c1ff30bf398330 /libffi/testsuite/libffi.call/float2.c
parent28a686ef16077f75afbfa3d315cd268680e11b75 (diff)
Import libffi from PyObjC 1.3.7.
darcs-hash:129bccb59266f997deac9b0353aea2d2d4049f92
Diffstat (limited to 'libffi/testsuite/libffi.call/float2.c')
-rw-r--r--libffi/testsuite/libffi.call/float2.c60
1 files changed, 60 insertions, 0 deletions
diff --git a/libffi/testsuite/libffi.call/float2.c b/libffi/testsuite/libffi.call/float2.c
new file mode 100644
index 0000000..4de41d3
--- /dev/null
+++ b/libffi/testsuite/libffi.call/float2.c
@@ -0,0 +1,60 @@
+/* Area: ffi_call
+ Purpose: Check return value long double.
+ Limitations: none.
+ PR: none.
+ Originator: From the original ffitest.c */
+
+/* { dg-do run } */
+/* { dg-options -mlong-double-128 { target powerpc64*-*-* } } */
+
+#include "ffitest.h"
+#include "float.h"
+
+static long double ldblit(float f)
+{
+ return (long double) (((long double) f)/ (long double) 3.0);
+}
+
+int main (void)
+{
+ ffi_cif cif;
+ ffi_type *args[MAX_ARGS];
+ void *values[MAX_ARGS];
+ float f;
+ long double ld;
+
+ args[0] = &ffi_type_float;
+ values[0] = &f;
+
+ /* Initialize the cif */
+ CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 1,
+ &ffi_type_longdouble, args) == FFI_OK);
+
+ f = 3.14159;
+
+#if 1
+ /* This is ifdef'd out for now. long double support under SunOS/gcc
+ is pretty much non-existent. You'll get the odd bus error in library
+ routines like printf(). */
+ printf ("%Lf\n", ldblit(f));
+#endif
+ ld = 666;
+ ffi_call(&cif, FFI_FN(ldblit), &ld, values);
+
+#if 1
+ /* This is ifdef'd out for now. long double support under SunOS/gcc
+ is pretty much non-existent. You'll get the odd bus error in library
+ routines like printf(). */
+ printf ("%Lf, %Lf, %Lf, %Lf\n", ld, ldblit(f), ld - ldblit(f), LDBL_EPSILON);
+#endif
+
+ /* These are not always the same!! Check for a reasonable delta */
+ /*@-realcompare@*/
+ if (ld - ldblit(f) < LDBL_EPSILON)
+ /*@=realcompare@*/
+ puts("long double return value tests ok!");
+ else
+ CHECK(0);
+
+ exit(0);
+}