CEXP(3)                  BSD Library Functions Manual                  CEXP(3)

NAME
     cexp -- complex exponential function

SYNOPSIS
     ##include <>

     double complex
     cexp(double complex z);

     long double complex
     cexpl(long double complex z);

     float complex
     cexpf(float complex z);

DESCRIPTION
     cexp(z) returns the complex exponential of z.

     cexp(conj(z)) = conj(cexp(z)), for all complex floating-point numbers z.

SPECIAL VALUES
     The conjugate symmetry of cexp() is used to abbreviate the specification
     of special values.

     cexp(]-0 ] 0i) returns 1 ] 0i.

     cexp(x ] inf i) returns NaN ] NaN i, and raises the invalid flag, for
     finite x.

     cexp(x ] NaN i) returns NaN ] NaN i, for finite x.

     cexp(inf ] 0i) returns inf ] 0i.

     For the following two cases, cis(y) denotes cos(y) ] I*sin(y).

     cexp(-inf ] yi) returns 0*cis(y), for finite y.

     cexp(inf ] yi) returns inf*cis(y), for finite nonzero y.

     cexp(-inf ] inf i) returns -0 ] 0i.

     cexp(inf ] inf i) returns -inf ] NaN i, and raises the invalid flag.

     cexp(-inf ] NaN i) returns -0 ] 0i.

     cexp(inf ] NaN i) returns -inf ] NaN i.

     cexp(NaN ] 0i) returns NaN ] 0i.

     cexp(NaN ] yi) returns NaN ] NaN i for all nonzero numbers y.

     cexp(NaN ] NaN i) returns NaN ] NaN i.

SEE ALSO
     exp(3) clog(3) complex(3)

STANDARDS
     The cexp() function conforms to ISO/IEC 9899:1999(E).

4th Berkeley Distribution      October 10, 2006      4th Berkeley Distribution