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- .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)
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