tan(3) [netbsd man page]

TAN(3)							   BSD Library Functions Manual 						    TAN(3)

NAME

     tan, tanf -- tangent function

LIBRARY

     Math Library (libm, -lm)

SYNOPSIS

     #include <math.h>

     double
     tan(double x);

     float
     tanf(float x);

DESCRIPTION

     The tan() and tanf() functions compute the tangent 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 tan() function returns the tangent value.

SEE ALSO

     acos(3), asin(3), atan(3), atan2(3), cos(3), cosh(3), math(3), sin(3), sinh(3), tanh(3)

STANDARDS

     The tan() function conforms to ANSI X3.159-1989 (``ANSI C89'').

BSD
								    May 2, 1991 							       BSD

TAN(3)							   BSD Library Functions Manual 						    TAN(3)

NAME

     tan -- tangent function

SYNOPSIS

     #include <math.h>

     double
     tan(double x);

     long double
     tanl(long double x);

     float
     tanf(float x);

DESCRIPTION

     The tan() function computes the tangent of x (measured in radians).

SPECIAL VALUES

     tan(+-0) returns +-0.

     tan(+-infinity) returns a NaN and raises the "invalid" floating-point exception.

VECTOR OPERATIONS

     If you need to apply the tan() function to SIMD vectors or arrays, using the following functions provided by the Accelerate.framework may
     give significantly better performance:

     #include <Accelerate/Accelerate.h>

     vFloat vtanf(vFloat x);
     void vvtanf(float *y, const float *x, const int *n);
     void vvtan(double *y, const double *x, const int *n);

SEE ALSO

     acos(3), asin(3), atan(3), atan2(3), cos(3), cosh(3), sin(3), sinh(3), tanh(3), math(3)

STANDARDS

     The tan() function conforms to ISO/IEC 9899:2011.

BSD
								 December 11, 2006							       BSD