LibC: Add imaxabs

Author: matyalatte

Userland/Libraries/LibC/inttypes.cpp

@@ -11,6 +11,11 @@
 
 extern "C" {
 
+intmax_t imaxabs(intmax_t n)
+{
+    return n > 0 ? n : -n;
+}
+
 imaxdiv_t imaxdiv(intmax_t numerator, intmax_t denominator)
 {
     imaxdiv_t result;

Userland/Libraries/LibC/inttypes.h

@@ -191,6 +191,8 @@ __BEGIN_DECLS
 #define SCNxFAST32 SCNx32
 #define SCNxFAST64 SCNx64
 
+intmax_t imaxabs(intmax_t);
+
 typedef struct imaxdiv_t {
     intmax_t quot;
     intmax_t rem;