ABS.3
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上传日期:2007-02-01
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C/C++
- ." @(#)abs.3 6.1 (Berkeley) 5/15/85
- ."
- .TH ABS 3 "May 15, 1985"
- .AT 3
- .SH NAME
- abs - integer absolute value
- .SH SYNOPSIS
- .nf
- .ft B
- #include <stdlib.h>
- int abs(int fIifP)
- .ft R
- .fi
- .SH DESCRIPTION
- .B Abs
- returns the absolute value of its integer operand.
- .SH SEE ALSO
- .BR floor (3).
- .SH BUGS
- Applying the fIabsfP function to the most negative integer generates a
- result which is the most negative integer. That is, abs(0x80000000)
- returns 0x80000000 as a result on a machine with 32-bit ints. Using the
- result in unsigned computations is sound however.