V7/usr/man/man3/abs.3

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.TH ABS 3 
.SH NAME
abs \- integer absolute value
.SH SYNOPSIS
.B abs(i)
.SH DESCRIPTION
.I Abs
returns
the absolute value of its integer operand.
.SH SEE ALSO
floor(3) for
.I fabs
.SH BUGS
You get what the hardware gives on the largest negative integer.