ref: f97cf2ac238cb993721405e5c7641f3995d8a468
dir: /sys/man/2/floor/
.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)