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Re: acoshl functions for ldbl-96

Thank you for giving answer. Yes, You are right that there's a fpu directory that implemented of these functions.
Only I386 family, M68k and X86_64 use long-double as 96 bits. In FPU Directory of those architectures, __ieee754_logl,__log1pl,__ieee754_sqrtl and also some another functions (which are not implemented in ldbl-96) are implemented.
I am working on Glibc for new Architecture. It uses long-double as 96 bits. Due to unavailable instuctions like 'logl' , 'expl' , we must use C code for above functions. I currently working on above functions which will use C code to compute math functions for long double as 96 .

Thanking you, Dhaval Prajapati.

From: Andreas Jaeger <>
To: "Dhaval Prajapati" <>
Subject: Re: acoshl functions for ldbl-96
Date: Mon, 23 Aug 2004 19:26:56 +0200

"Dhaval Prajapati" <> writes:

> 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?

Build glibc yourself and then check which functions gets build.  The
build process is rather involved and different files are taken
dependend on the architecture.  For example on i386, there's a fpu
directory that implements some of these functions.

 Andreas Jaeger,,
  SUSE Linux AG, Maxfeldstr. 5, 90409 Nürnberg, Germany
   GPG fingerprint = 93A3 365E CE47 B889 DF7F  FED1 389A 563C C272 A126
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