/// <summary>
/// Returns the smaller of two 32-bit signed integers.
/// </summary>
/// <param name="val1">The first of two 32-bit signed integers to compare. </param>
/// <param name="val2">The second of two 32-bit signed integers to compare. </param>
/// <returns>Parameter val1 or val2, whichever is smaller.</returns>
public static int Min(int val1, int val2)
{
return(MathInternal.Min(val1, val2));
}
/// <summary>
/// Replaces the format items in a string with the string representations of corresponding objects in a specified array.
/// </summary>
/// <param name="format">A composite format string</param>
/// <param name="args">An object array that contains zero or more objects to format.</param>
/// <returns>A copy of format in which the format items have been replaced by the string representation of the corresponding objects in args.</returns>
public static string Format(string format, params object[] args)
{
var index = 0;
var alignment = 0;
var chr = '\0';
var len = format.Length;
var fmt = Empty;
var token = Empty;
var output = Empty;
if (format is null)
{
throw new ArgumentNullException("format can't be null");
}
for (var i = 0; i < len; i++)
{
token = Empty;
chr = format[i];
if (chr == '{')
{
if (i + 1 == len)
{
throw new ArgumentException("Format error: no closed brace, column " + i);
}
if (format[i + 1] == '{')
{
output += chr;
i++;
continue;
}
else
{
alignment = 0;
fmt = Empty;
for (i++; i < len; i++)
{
chr = format[i];
if (chr >= '0' && chr <= '9')
{
token += chr;
}
else if (chr == ',' || chr == ':' || chr == '}')
{
break;
}
else
{
throw new ArgumentException("Format error: wrong symbol at {}, column " + i);
}
}
if (token.Length > 0)
{
index = int.Parse(token);
}
else
{
throw new ArgumentException("Format error: empty {}, column " + i);
}
if (chr == ',')
{
if (format[i + 1] == '-')
{
token = "-";
i++;
}
else
{
token = Empty;
}
for (i++; i < len; i++)
{
chr = format[i];
if (chr >= '0' && chr <= '9')
{
token += chr;
}
else if (chr == ':' || chr == '}')
{
break;
}
else
{
throw new ArgumentException("Format error: wrong symbol at alignment, column " + i);
}
}
if (token.Length > 0)
{
alignment = int.Parse(token);
}
else
{
throw new ArgumentException("Format error: empty alignment, column " + i);
}
}
if (chr == ':')
{
token = Empty;
for (i++; i < len; i++)
{
chr = format[i];
if (chr == '}')
{
break;
}
else
{
token += chr;
}
}
if (token.Length > 0)
{
fmt = token;
}
else
{
throw new ArgumentException("Format error: empty format after ':', column " + i);
}
}
}
if (chr != '}')
{
throw new ArgumentException("Format error: no closed brace, column " + i);
}
if (fmt.Length > 0)
{
var method = args[index].GetType().GetMethod("ToString", new Type[] { typeof(string) });
token = (method is null)
? args[index].ToString()
: method.Invoke(args[index], new object[] { token }).ToString();
}
else
{
token = args[index].ToString();
}
if (alignment > 0)
{
output += token.PadLeft(alignment);
}
else if (alignment < 0)
{
output += token.PadRight(MathInternal.Abs(alignment));
}
else
{
output += token;
}
}
else if (chr == '}')
{
if (i + 1 == len)
{
throw new ArgumentException("Format error: no closed brace, column " + i);
}
if (format[i + 1] == '}')
{
output += chr;
i++;
}
else
{
throw new ArgumentException("Format error: no closed brace, column " + i);
}
}
else
{
output += chr;
}
}
return(output);
}
/// <summary>
/// Returns the absolute value of a 32-bit signed integer.
/// </summary>
/// <param name="val">A number that is greater than Int32..::..MinValue, but less than or equal to Int32..::..MaxValue.</param>
/// <returns>A 32-bit signed integer, x, such that 0 ≤ x ≤ Int32..::..MaxValue.</returns>
public static int Abs(int val)
{
return(MathInternal.Abs(val));
}