cos(3)
- NetBSD Manual Pages
COS(3) NetBSD Library Functions Manual COS(3)
NAME
cos, cosf, cosl -- cosine function
LIBRARY
Math Library (libm, -lm)
SYNOPSIS
#include <math.h>
double
cos(double x);
float
cosf(float x);
long double
cosl(long double x);
DESCRIPTION
The cos(), cosf(), and cosl() functions compute the cosine of x (measured
in radians). A large magnitude argument may yield a result with little
or no significance. For a discussion of error due to roundoff, see
math(3).
RETURN VALUES
The cos() function returns the cosine value.
SEE ALSO
acos(3), asin(3), atan(3), atan2(3), cosh(3), math(3), sin(3), sinh(3),
tan(3), tanh(3)
STANDARDS
The cos() function conforms to ANSI X3.159-1989 (``ANSI C89'').
HISTORY
A cos() function appeared in Version 1 AT&T UNIX.
NetBSD 9.3 September 2, 2019 NetBSD 9.3
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