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NAMEcos , cosf ,
cosl —
cosine functions
LIBRARYMath Library (libm, -lm)SYNOPSIS#include <math.h>
double
float
long double
DESCRIPTIONThecos (), 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 VALUESThecos (), cosf (), and
cosl () functions return the cosine value.
SEE ALSOacos(3), asin(3), atan(3), atan2(3), ccos(3), cosh(3), math(3), sin(3), sinh(3), tan(3), tanh(3)STANDARDSThese functions conform to ISO/IEC 9899:1999 (“ISO C99”).HISTORYThecos () function first appeared in
Version 1 AT&T UNIX.
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