1 files changed, 55 insertions, 0 deletions
diff --git a/gcc/testsuite/c-c++-common/torture/complex-sign-sub.c b/gcc/testsuite/c-c++-common/torture/complex-sign-sub.c
new file mode 100644
index 000000000..0a4e3029e
--- /dev/null
+++ b/gcc/testsuite/c-c++-common/torture/complex-sign-sub.c
@@ -0,0 +1,55 @@
+/* Test complex arithmetic with signed zeros.  Pure complex
+   subtraction.  */
+/* { dg-do run } */
+/* { dg-options "-std=gnu99" { target c } } */
+
+#include "complex-sign.h"
+
+#define CHECK_SUB(TYPE, COPY, ZERO, ZEROI)			\
+  do {								\
+    CHECK_ARITH (TYPE, COPY, ZERO, ZEROI, -, +, +, +, +, +, +);	\
+    CHECK_ARITH (TYPE, COPY, ZERO, ZEROI, -, +, +, +, -, +, +);	\
+    CHECK_ARITH (TYPE, COPY, ZERO, ZEROI, -, +, +, -, +, +, +);	\
+    CHECK_ARITH (TYPE, COPY, ZERO, ZEROI, -, +, +, -, -, +, +);	\
+    CHECK_ARITH (TYPE, COPY, ZERO, ZEROI, -, +, -, +, +, +, -);	\
+    CHECK_ARITH (TYPE, COPY, ZERO, ZEROI, -, +, -, +, -, +, +);	\
+    CHECK_ARITH (TYPE, COPY, ZERO, ZEROI, -, +, -, -, +, +, -);	\
+    CHECK_ARITH (TYPE, COPY, ZERO, ZEROI, -, +, -, -, -, +, +);	\
+    CHECK_ARITH (TYPE, COPY, ZERO, ZEROI, -, -, +, +, +, -, +);	\
+    CHECK_ARITH (TYPE, COPY, ZERO, ZEROI, -, -, +, +, -, -, +);	\
+    CHECK_ARITH (TYPE, COPY, ZERO, ZEROI, -, -, +, -, +, +, +);	\
+    CHECK_ARITH (TYPE, COPY, ZERO, ZEROI, -, -, +, -, -, +, +);	\
+    CHECK_ARITH (TYPE, COPY, ZERO, ZEROI, -, -, -, +, +, -, -);	\
+    CHECK_ARITH (TYPE, COPY, ZERO, ZEROI, -, -, -, +, -, -, +);	\
+    CHECK_ARITH (TYPE, COPY, ZERO, ZEROI, -, -, -, -, +, +, -);	\
+    CHECK_ARITH (TYPE, COPY, ZERO, ZEROI, -, -, -, -, -, +, +);	\
+  } while (0)
+
+void
+check_sub_float (void)
+{
+#ifndef __SPU__
+  CHECK_SUB (float, __builtin_copysignf, 0.0f, 0.0if);
+#endif
+}
+
+void
+check_sub_double (void)
+{
+  CHECK_SUB (double, __builtin_copysign, 0.0, 0.0i);
+}
+
+void
+check_sub_long_double (void)
+{
+  CHECK_SUB (long double, __builtin_copysignl, 0.0l, 0.0il);
+}
+
+int
+main (void)
+{
+  check_sub_float ();
+  check_sub_double ();
+  check_sub_long_double ();
+  exit (0);
+}