floor.3m

unix v7是最后一个广泛发布的研究型UNIX版本

.TH FLOOR 3M 
.SH NAME
fabs, floor, ceil \- absolute value, floor, ceiling functions
.SH SYNOPSIS
.B #include <math.h>
.PP
.B double floor(x)
.br
.B double x;
.PP
.B double ceil(x)
.br
.B double x;
.PP
.B double fabs(x)
.br
.B double(x);
.SH DESCRIPTION
.I Fabs
returns the absolute value
.RI | \|x\| |.
.PP
.I Floor
returns the
largest integer
not greater than
.IR x .
.PP
.I Ceil
returns the
smallest integer
not less than
.IR x .
.SH SEE ALSO
abs(3)