Minix Man Pages
home | helpATAN(3) BSD Library Functions Manual ATAN(3) NAME atan, atanf, atanl -- arc tangent function of one variable LIBRARY Math Library (libm, -lm) SYNOPSIS #include <math.h> double atan(double x); float atanf(float x); long double atanl(long double x); DESCRIPTION The atan(), atanf(), and atanl() functions compute the principal value of the arc tangent of x in the range [-pi/2, +pi/2]. SEE ALSO acos(3), asin(3), atan2(3), cos(3), cosh(3), math(3), sin(3), sinh(3), tan(3), tanh(3) STANDARDS The atan() functions conforms to ISO/IEC 9899:1999 ("ISO C99"). BSD January 29, 2013 BSD
NAME | LIBRARY | SYNOPSIS | DESCRIPTION | SEE ALSO | STANDARDS