aboutsummaryrefslogtreecommitdiff
path: root/gcc/testsuite/gcc.c-torture/unsorted/udconvert.c
diff options
context:
space:
mode:
Diffstat (limited to 'gcc/testsuite/gcc.c-torture/unsorted/udconvert.c')
-rw-r--r--gcc/testsuite/gcc.c-torture/unsorted/udconvert.c30
1 files changed, 30 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.c-torture/unsorted/udconvert.c b/gcc/testsuite/gcc.c-torture/unsorted/udconvert.c
new file mode 100644
index 00000000000..31b494fe08a
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/unsorted/udconvert.c
@@ -0,0 +1,30 @@
+double
+unsigned_to_double1 (u)
+ unsigned u;
+{
+ double d;
+ d = (int) u; /* convert as from a *signed* integer */
+ return ((int) u < 0)
+ ? d + 4294967296.0
+ : d;
+}
+
+/* Alternatively */
+
+double
+unsigned_to_double2 (u)
+ unsigned u;
+{
+ double d;
+ u -= 2147483648; /* complement sign bit */
+ d = (int) u; /* convert as from a *signed* integer */
+ return d + 2147483648.0;
+}
+
+unsigned
+double_to_unsigned (d)
+ double d;
+{
+ d += 2147483648.0;
+ return ((int) d) - 2147483648;
+}