DragonFly On-Line Manual Pages

CCOS(3)               DragonFly Library Functions Manual               CCOS(3)

NAME
     ccos, ccosf, ccosl -- complex circular cosine

SYNOPSIS
     #include <complex.h>

     double complex
     ccos(double complex z);

     float complex
     ccosf(float complex z);

     long double complex
     ccosl(long double complex z);

DESCRIPTION
     The ccos(), ccosf() and ccosl() functions compute the complex circular
     cosine of z.

     If z = x + iy, then

           ccos(z) = cos(x) cosh(y) - i sin(x) sinh(y).

RETURN VALUES
     The ccos(), ccosf() and ccosl() functions return the complex circular
     cosine of z.

SEE ALSO
     csin(3), ctan(3)

STANDARDS
     The ccos(), ccosf() and ccosl() functions conform to ISO/IEC 9899:1999
     (``ISO C99'').

DragonFly 4.1                    June 5, 2013                    DragonFly 4.1