1 files changed, 70 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.c-torture/execute/ieee/copysign2.c b/gcc/testsuite/gcc.c-torture/execute/ieee/copysign2.c
new file mode 100644
index 000000000..fac7ab3a5
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/execute/ieee/copysign2.c
@@ -0,0 +1,70 @@
+#include <string.h>
+#include <stdlib.h>
+#include <float.h>
+
+#define fpsizeoff	sizeof(float)
+#define fpsizeof	sizeof(double)
+#define fpsizeofl	sizeof(long double)
+
+/* Work around the fact that with the Intel double-extended precision,
+   we've got a 10 byte type stuffed into some amount of padding.  And
+   the fact that -ffloat-store is going to stuff this value temporarily
+   into some bit of stack frame that we've no control over and can't zero.  */
+#if LDBL_MANT_DIG == 64
+# if defined(__i386__) || defined(__x86_64__) || defined (__ia64__)
+#  undef fpsizeofl
+#  define fpsizeofl	10
+# endif
+#endif
+
+/* Work around the fact that the sign of the second double in the IBM
+   double-double format is not strictly specified when it contains a zero.
+   For instance, -0.0L can be represented with either (-0.0, +0.0) or
+   (-0.0, -0.0).  The former is what we'll get from the compiler when it
+   builds constants; the later is what we'll get from the negation operator
+   at runtime.  */
+/* ??? This hack only works for big-endian, which is fortunately true for
+   all of AIX, Darwin, and Irix.  */
+#if LDBL_MANT_DIG == 106
+# undef fpsizeofl
+# define fpsizeofl	sizeof(double)
+#endif
+
+
+#define TEST(TYPE, EXT)						\
+static TYPE Y##EXT[] = {					\
+  2.0, -2.0, -2.0, -2.0, -2.0, 2.0, -0.0, __builtin_inf##EXT ()	\
+};								\
+static const TYPE Z##EXT[] = {					\
+  1.0, -1.0, -1.0, -0.0, -0.0, 0.0, -__builtin_inf##EXT (),	\
+  __builtin_nan##EXT ("")					\
+};								\
+								\
+void test##EXT (void)						\
+{								\
+  TYPE r[8];							\
+  int i;							\
+  r[0] = __builtin_copysign##EXT (1.0, Y##EXT[0]);		\
+  r[1] = __builtin_copysign##EXT (1.0, Y##EXT[1]);		\
+  r[2] = __builtin_copysign##EXT (-1.0, Y##EXT[2]);		\
+  r[3] = __builtin_copysign##EXT (0.0, Y##EXT[3]);		\
+  r[4] = __builtin_copysign##EXT (-0.0, Y##EXT[4]);		\
+  r[5] = __builtin_copysign##EXT (-0.0, Y##EXT[5]);		\
+  r[6] = __builtin_copysign##EXT (__builtin_inf##EXT (), Y##EXT[6]); \
+  r[7] = __builtin_copysign##EXT (-__builtin_nan##EXT (""), Y##EXT[7]); \
+  for (i = 0; i < 8; ++i)					\
+    if (memcmp (r+i, Z##EXT+i, fpsizeof##EXT) != 0)		\
+      abort ();							\
+}
+
+TEST(float, f)
+TEST(double, )
+TEST(long double, l)
+
+int main()
+{
+  testf();
+  test();
+  testl();
+  return 0;
+}