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Dropped NaN from gsl_sf_bessel_zero_Jnu
From: |
Jackson Vanover |
Subject: |
Dropped NaN from gsl_sf_bessel_zero_Jnu |
Date: |
Wed, 15 Jan 2020 13:58:44 -0800 |
Using version 2.6 of GSL from ftp://ftp.gnu.org/gnu/gsl/gsl-2.6.tar.gz
OS is Ubuntu 18.04.2 LTS
Hardware is a Dell workstation with a 3.60 GHz Intel i7-4790 and 32 GB
of RAM
Compiler is gcc 7.4.0 with the -w option
When the first argument is nonzero and second argument is a NaN,
gsl_sf_bessel_zero_Jnu returns 0. I would expect that the error handler
would be invoked for such an input.
#include <gsl/gsl_sf.h>
#include <stdio.h>
#include <gsl/gsl_math.h>
int main (void){
double out;
out = gsl_sf_bessel_zero_Jnu(2, GSL_NAN);
printf("%f\n", out);
printf("%.21e\n", out);
return 0;
}
Best,
Jackson Vanover
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