59 lines
737 B
Plaintext
59 lines
737 B
Plaintext
|
.TH FLOOR 2
|
||
|
|
.SH NAME
|
||
|
|
fabs, fmod, floor, ceil \- absolute value, remainder, floor, ceiling functions
|
||
|
|
.SH SYNOPSIS
|
||
|
|
.B #include <u.h>
|
||
|
|
.br
|
||
|
|
.B #include <libc.h>
|
||
|
|
.PP
|
||
|
|
.B
|
||
|
|
double floor(double x)
|
||
|
|
.PP
|
||
|
|
.B
|
||
|
|
double ceil(double x)
|
||
|
|
.PP
|
||
|
|
.B
|
||
|
|
double fabs(double x)
|
||
|
|
.PP
|
||
|
|
.B
|
||
|
|
double fmod(double x, double y)
|
||
|
|
.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 .
|
||
|
|
.PP
|
||
|
|
.I Fmod
|
||
|
|
returns
|
||
|
|
.I x
|
||
|
|
if
|
||
|
|
.I y
|
||
|
|
is zero, otherwise the number
|
||
|
|
.I f
|
||
|
|
with the same sign as
|
||
|
|
.IR x ,
|
||
|
|
such that
|
||
|
|
.I "x = iy + f\|"
|
||
|
|
for some integer
|
||
|
|
.IR i ,
|
||
|
|
and
|
||
|
|
.RI | \|f\| |
|
||
|
|
<
|
||
|
|
.RI | \|y\| |.
|
||
|
|
.SH SOURCE
|
||
|
|
.B /sys/src/libc/port
|
||
|
|
.SH SEE ALSO
|
||
|
|
.IR abs (2),
|
||
|
|
.IR frexp (2)
|