Originální popis anglicky:
cos, cosf, cosl - cosine function
Návod, kniha: Linux Programmer's Manual
#include <math.h>
double cos(double x);
float cosf(float x);
long double cosl(long double x);
Link with -lm.
The
cos() function returns the cosine of
x, where
x is
given in radians.
The
cos() function returns a value between -1 and 1.
SVID 3, POSIX, BSD 4.3, ISO 9899. The float and the long double variants are C99
requirements.
acos(3),
asin(3),
atan(3),
atan2(3),
sin(3),
tan(3)
