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

Timestamp:

2018-06-20T18:58:11Z (7 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.

Location:

uspace/lib/c/generic

Files:

• io/printf_core.c (modified) (1 diff)
• stdlib.c (modified) (1 diff)
• vfs/vfs.c (modified) (2 diffs)

uspace/lib/c/generic/io/printf_core.c

@@ -39 +39 @@
 #include <stdio.h>
 #include <stddef.h>
+#include <stdlib.h>
 #include <io/printf_core.h>
 #include <ctype.h>

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.
  *

uspace/lib/c/generic/vfs/vfs.c

@@ -285 +285 @@
 {
         size_t abs_size;
-        char *abs = vfs_absolutize(path, &abs_size);
-        if (!abs)
+        char *abs_path = vfs_absolutize(path, &abs_size);
+        if (abs_path == NULL)
                 return ENOMEM;
 
         int fd;
-        errno_t rc = vfs_lookup(abs, WALK_DIRECTORY, &fd);
+        errno_t rc = vfs_lookup(abs_path, WALK_DIRECTORY, &fd);
         if (rc != EOK) {
-                free(abs);
+                free(abs_path);
                 return rc;
         }
@@ -305 +305 @@
 
         cwd_fd = fd;
-        cwd_path = abs;
+        cwd_path = abs_path;
         cwd_size = abs_size;