Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / post / lib_powerpc / fpu / mul-subnormal-single-1.c

diff --git a/qemu/roms/u-boot/post/lib_powerpc/fpu/mul-subnormal-single-1.c b/qemu/roms/u-boot/post/lib_powerpc/fpu/mul-subnormal-single-1.c
new file mode 100644 (file)
index 0000000..2815a30
--- /dev/null
+++ b/qemu/roms/u-boot/post/lib_powerpc/fpu/mul-subnormal-single-1.c
@@ -0,0 +1,86 @@
+/*
+ * Copyright (C) 2007
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+/*
+ * This file is originally a part of the GCC testsuite.
+ * Check that certain subnormal numbers (formerly known as denormalized
+ * numbers) are rounded to within 0.5 ulp.  PR other/14354.
+ */
+
+#include <common.h>
+
+#include <post.h>
+
+GNU_FPOST_ATTR
+
+#if CONFIG_POST & CONFIG_SYS_POST_FPU
+
+union uf
+{
+       unsigned int u;
+       float f;
+};
+
+static float
+u2f (unsigned int v)
+{
+       union uf u;
+       u.u = v;
+       return u.f;
+}
+
+static unsigned int
+f2u (float v)
+{
+       union uf u;
+       u.f = v;
+       return u.u;
+}
+
+static int ok = 1;
+
+static void
+tstmul (unsigned int ux, unsigned int uy, unsigned int ur)
+{
+       float x = u2f (ux);
+       float y = u2f (uy);
+
+       if (f2u (x * y) != ur)
+       /* Set a variable rather than aborting here, to simplify tracing when
+          several computations are wrong.  */
+               ok = 0;
+}
+
+/* We don't want to make this const and static, or else we risk inlining
+   causing the test to fold as constants at compile-time.  */
+struct
+{
+  unsigned int p1, p2, res;
+} static volatile expected[] =
+{
+       {0xfff, 0x3f800400, 0xfff},
+       {0xf, 0x3fc88888, 0x17},
+       {0xf, 0x3f844444, 0xf}
+};
+
+int fpu_post_test_math7 (void)
+{
+       unsigned int i;
+
+       for (i = 0; i < ARRAY_SIZE(expected); i++)
+       {
+               tstmul (expected[i].p1, expected[i].p2, expected[i].res);
+               tstmul (expected[i].p2, expected[i].p1, expected[i].res);
+       }
+
+       if (!ok) {
+               post_log ("Error in FPU math7 test\n");
+               return -1;
+       }
+       return 0;
+}
+
+#endif /* CONFIG_POST & CONFIG_SYS_POST_FPU */