Changeset 7d7bc09 in mainline for uspace/lib/c/generic/stdlib.c

Timestamp:

2018-06-20T18:58:11Z (6 years ago)

Author:

Jiri Svoboda <jiri@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

777832e

Parents:

3bd1d7d4

Message:

abs, labs, llabs.

File:

• uspace/lib/c/generic/stdlib.c (modified) (1 diff)

uspace/lib/c/generic/stdlib.c

@@ -195 +195 @@
 }
 
+/** Compute the absolute value of an integer.
+ *
+ * If the result cannot be represented, the behavior is undefined.
+ *
+ * @param j Integer
+ * @return The absolute value of @a j
+ */
+int abs(int j)
+{
+        int aj;
+
+        if (j < 0) {
+                aj = -j;
+                assert(aj >= 0);
+        } else {
+                aj = j;
+        }
+
+        return aj;
+}
+
+/** Compute the absolute value of a long integer.
+ *
+ * If the result cannot be represented, the behavior is undefined.
+ *
+ * @param j Long integer
+ * @return The absolute value of @a j
+ */
+long labs(long j)
+{
+        long aj;
+
+        if (j < 0) {
+                aj = -j;
+                assert(aj >= 0);
+        } else {
+                aj = j;
+        }
+
+        return aj;
+}
+
+/** Compute the absolute value of a long long integer.
+ *
+ * If the result cannot be represented, the behavior is undefined.
+ *
+ * @param j Long long integer
+ * @return The absolute value of @a j
+ */
+long long llabs(long long j)
+{
+        long long aj;
+
+        if (j < 0) {
+                aj = -j;
+                assert(aj >= 0);
+        } else {
+                aj = j;
+        }
+
+        return aj;
+}
+
 /** Compute quotient and remainder of int division.
  *