MathLib: replaced isHexDigit function by isxdigit.

lib/mathlib.cpp

@@ -240,13 +240,13 @@ bool MathLib::isHex(const std::string& s)
                 return false;
             break;
         case DIGIT:
-            if (isHexDigit(*it))
+            if (isxdigit(*it))
                 state = DIGITS;
             else
                 return false;
             break;
         case DIGITS:
-            if (isHexDigit(*it))
+            if (isxdigit(*it))
                 state = DIGITS;
             else if (*it == 'u' || *it == 'U')
                 state = SUFFIX_U;
@@ -294,13 +294,6 @@ bool MathLib::isHex(const std::string& s)
            || (state == SUFFIX_ULL) || (state == SUFFIX_LLU);
 }
 
-bool MathLib::isHexDigit(char c)
-{
-    return (c == '0' || c == '1' || c == '2' || c == '3' || c == '4' || c == '5' || c == '6' || c == '7' || c == '8' || c == '9'
-            || c == 'A' || c == 'B' || c == 'C' || c == 'D' || c == 'E' || c == 'F'
-            || c == 'a' || c == 'b' || c == 'c' || c == 'd' || c == 'e' || c == 'f');
-}
-
 /*! \brief Does the string represent a binary number?
  * In case leading or trailing white space is provided, the function
  * returns false.

lib/mathlib.h

@@ -74,13 +74,6 @@ public:
      * @return true if given character is octal digit.
      */
     static bool isOctalDigit(char c);
-
-    /**
-     * Return true if given character is 0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F.
-     * @param c The character to check
-     * @return true if given character is hex digit.
-     */
-    static bool isHexDigit(char c);
 };
 
 template<> CPPCHECKLIB std::string MathLib::toString(double value); // Declare specialization to avoid linker problems