diff options
Diffstat (limited to 'man3/cacosh.3')
| -rw-r--r-- | man3/cacosh.3 | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/man3/cacosh.3 b/man3/cacosh.3 new file mode 100644 index 000000000..f4780f575 --- /dev/null +++ b/man3/cacosh.3 @@ -0,0 +1,30 @@ +.\" Copyright 2002 Walter Harms(walter.harms@informatik.uni-oldenburg.de) +.\" Distributed under GPL +.\" +.TH CACOSH 3 2002-07-28 "" "complex math routines" +.SH NAME +cacosh, cacoshf, cacoshl \- complex arc hyperbolic cosine +.SH SYNOPSIS +.B #include <complex.h> +.sp +.BI "double complex cacosh(double complex " z ); +.sp +.BI "float complex cacoshf(float complex " z ); +.sp +.BI "long double complex cacoshl(long double complex " z ); +.sp +Link with \-lm. +.SH DESCRIPTION +The cacosh() function calculates the complex acosh(). +If y = cacosh(z), then z = ccosh(y). +The imaginary part of y is chosen in the interval [-pi,pi]. +The real part of y is chosen nonnegative. +.LP +One has cacosh(z) = (0.5)*clog((1+z)/(1-z)). +.SH "CONFORMING TO" +C99 +.SH "SEE ALSO" +.BR acosh (3), +.BR cabs (3), +.BR cimag (3), +.BR complex (5) |