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Expressions in Scripts or Templates can contain any of the standard C operators:

  • + (addition)
  • - (subtraction)
  • * (multiplication)
  • / (division)
  • ~ (binary invert)
  • ^ (binary xor)
  • & (binary and)
  • | (binary or)
  • % (modulus)
  • ++ (increment)
  • -- (decrement)
  • ?: (ternary)
  • << (shift left)
  • >> (shift right)

Note that the >> operator can give different results depending if the operand is signed or unsigned. When unsigned the left-most bit will always be zero (logical shift) and when signed the left-most bit is copied from the operand (arithmetic shift). Brackets '(' or ')' can be used to group expressions. For example:

    (45 + 123) * (456 ^ 16)

is a valid expression. The following comparison operators can be used:

  • < (less than)
  • > (greater than)
  • <= (less than or equal)
  • >= (greater than or equal)
  • == (equal)
  • != (not equal)
  • ! (not)

For example,

    (45 > 32)

would return the value 1. Any of the assignment operators +=, -=, *=, /=, &=, ^=, %=, |=, <<=, or >>= can also be used. A number of addition Special Keywords including sizeof can be used in expressions.

Boolean Operators

The following boolean operators can be used in expressions:

  • && (AND)
  • || (OR)
  • ! (NOT - takes one operator only)

For example, to perform an operation if A and B are true or if C is not true, use:

    if( (A && B) || !C ) ...

Brackets can be used to indicate which order the operations should be performed.


Numbers may be entered in a number of different formats (see Introduction to Number Systems):

  • Decimal - 456

  • Hexadecimal - 0xff, 25h, 0EFh

  • Octal - 013 (with a zero before any numbers)

  • Binary - 0b011

The 'u' character can be used after a number to indicate an unsigned value (e.g. '12u'), or 'L' can be used to indicate an 8-byte int64 value (e.g. '-1L'). Floating-point numbers may contain 'e' for an exponent (e.g. 1e10). A floating-point number is automatically assumed to be an 8-byte double unless an 'f' character is located after the name (e.g. 2.0f), in which case the number is assumed to be a 4-byte float.

This is the manual for 010 Editor, a professional hex editor and text editor. Use 010 Editor to edit the individual bytes of any binary file, hard drive, or process on your machine. 010 Editor contains a whole host of powerful analysis and editing tools, plus Binary Templates technology that allows any binary format to be understood.

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