acoshl functions for ldbl-96

[Dhaval Prajapati]

Hi,

I am stdying glibc 2.3.2 . In ldbl-96 directory 
(path:glibc-2.3.2/sysdeps/ieee754/ldbl-96), there is e_acoshl.c file to 
compute 'acosh' for long double. This file is using these functions 
__ieee754_logl,__log1pl,__ieee754_sqrtl, which are not implemented in 
'ldbl-96' directory. So it will use from generic directory . But in that 
directory also these functions are not implemented.

I would like to know that , how e_acoshl.c compute 'acosh' correctly for 
long double? Why __ieee754_logl,__log1pl,__ieee754_sqrtl functions are not 
implemented in 'ldbl-96' directory?

Thanks in advance,
Dhaval Prajapati

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