4.4BSD/usr/share/man/cat3/cosh.0

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COSH(3)                     BSD Programmer's Manual                    COSH(3)

NNAAMMEE
     ccoosshh - hyperbolic cosine function

SSYYNNOOPPSSIISS
     ##iinncclluuddee <<mmaatthh..hh>>

     _d_o_u_b_l_e
     ccoosshh(_d_o_u_b_l_e _x);

DDEESSCCRRIIPPTTIIOONN
     The ccoosshh() function computes the hyperbolic cosine of _x.

RREETTUURRNN VVAALLUUEESS
     The ccoosshh() function returns the hyperbolic cosine unless the magnitude of
     _x is too large; in this event, the global variable _e_r_r_n_o is set to
     ERANGE.

SSEEEE AALLSSOO
     acos(3),  asin(3),  atan(3),  atan2(3),  cos(3),  sin(3),  sinh(3),
     tan(3),  tanh(3),  math(3),

SSTTAANNDDAARRDDSS
     The ccoosshh() function conforms to ANSI C X3.159-1989 (``ANSI C '').

4.4BSD                           June 4, 1993                                1