NSIS/Docs/src/int.but

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\H{intinst} Integer Support
\S{IntOp} IntOp
IntOp \e{user_var(output) value1 OP}
[value2] Combines value1 and (depending on OP) value2 into the user variable $x. OP is defined as one of the following:
\b + ADDs value1 and value2
\b - SUBTRACTs value2 from value1
\b * MULTIPLIES value1 and value2
\b / DIVIDEs value1 by value2
\b % MODULUSs value1 by value2
\b | BINARY ORs value1 and value2
\b & BINARY ANDs value1 and value2
\b ^ BINARY XORs value1 and value2
\b ~ BITWISE NEGATEs value1 (i.e. 7 becomes 4294917288)
\b ! LOGICALLY NEGATEs value1 (i.e. 7 becomes 0)
\b || LOGICALLY ORs value1 and value2
\b && LOGICALLY ANDs value1 and value2
\S{IntFmt} IntFmt
IntFmt \e{user_var(output) format numberstring}
Formats the number in "numberstring" using the format "format", and sets the output to user variable $x. Example format strings include "%08X" "%u"