Update of bug #22651 (project gsl):
Status: Need Info => Invalid
Open/Closed: Open => Closed
Release: => 1.11
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Follow-up Comment #1:
The information given in the email was incorrect. GSL returns the correct
value +0.96 for both real and complex versions of the function.
#include <gsl/gsl_complex_math.h>
#include <math.h>
#include <stdio.h>
int main ()
{
gsl_complex z,f;
double x, y, zero = 0.0;
x = 1.5;
y = acosh(x);
GSL_SET_COMPLEX(&z, x, zero);
f = gsl_complex_arccosh(z);
printf("%.18en", x);
printf("%.18en", y);
printf("%.18e %.18en", GSL_REAL(z), GSL_IMAG(z));
printf("%.18e %.18en", GSL_REAL(f), GSL_IMAG(f));
}
$ ./a.out
1.500000000000000000e+00
9.624236501192069415e-01
1.500000000000000000e+00 0.000000000000000000e+00
9.624236501192069415e-01 -0.000000000000000000e+00
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http://savannah.gnu.org/bugs/?22651>
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