Interface definitions for Hurd.

[kopensolaris-gnu/glibc.git] / PROJECTS

diff --git a/PROJECTS b/PROJECTS
index 9be423e..f4cadfd 100644 (file)
--- a/PROJECTS
+++ b/PROJECTS
@@ -57,39 +57,12 @@ contact <bug-glibc@prep.ai.mit.edu>
 [ 7] Several math functions have to be written:
 
      - exp2
-     - nearbyint
-     - ceil
-     - round
-     - rinttol
-     - rinttoll
-     - roundtol
-     - roundtoll
-
-     each with float, double, and long double arguments.  Writing these
-     functions should be possible when following the implementation of
-     the existing exp/log functions for other bases.
+
+     each with float, double, and long double arguments.
 
      Beside this most of the complex math functions which are new in
-     ISO C 9X.  gcc already has support for numbers of complex type so the
-     implementation should be possible today.  I mention here the names
-     and the way to write them (argument is z = x + iy):
-
-     - sin(z)  = 1/(2i) (e^(iz) - e^-(iz)) = sin(x) cosh(y) + i cos(x) sinh(y)
-     - cos(z)  = 1/2 (e^(iz) + e^-(iz)) = cos(x) cosh(y) - i sin(x) sinh(y)
-     - tan(z)  = 1/i (e^(iz) - e^-(iz))/(e^(iz) + e^-(iz))
-     - cot(z)  = i (e^(iz) + e^-(iz))/(e^(iz) - e^-(iz))
-     - asin(z) = -i ln(iz + sqrt(1-z^2))
-     - acos(z) = -i ln(z + sqrt(z^2-1))
-     - atan(z) = 1/(2i) ln((1+iz)/(1-iz))
-     - acot(z) = -1/(2i) ln((iz+1)/(iz-1))
-     - tanh(z) = (e^z - e^-z)/(e^z + e^-z)
-     - coth(z) = (e^z + e^-z)/(e^z - e^-z)
-
-     All functions should we written with all the parallelism in mind.
-     And assembler versions are highly expreciated since, e.g., the ix87
-     FPU provides an `fsincos' instructions which is certainly useful for
-     the `sin' function.  The implementations for the normal math functions
-     shows other optimization techniques.
+     ISO C 9X should be improved.  Writing some of them in assembler is
+     useful to exploit the parallelism which often is available.
 
 
 [ 8] If you enjoy assembler programming (as I do --drepper :-) you might
@@ -107,12 +80,6 @@ contact <bug-glibc@prep.ai.mit.edu>
      work.
 
 
-[ 9] Write nftw() function.  Perhaps it might be good to reimplement the
-     ftw() function as well to share most of the code.
-
-**** Almost done!
-
-
 [10] Extend regex and/or rx to work with wide characters and complete
      implementation of character class and collation class handling.
 
@@ -125,23 +92,12 @@ contact <bug-glibc@prep.ai.mit.edu>
      hard and not all services must be supported at once.
 
 
-[12] Rewrite utmp/wtmp functions to use database functions.  This is much
-     better than the normal flat file format.
-
-**** There are plans for a new approach to this problem.  Please contact
-     bug-glibc@prep.ai.mit.edu before starting to work.)
-
-
 [13] Several more or less small functions have to be written:
 
      + tcgetid() and waitid()                  from XPG4.2
      + grantpt(), ptsname(), unlockpt()                from XPG4.2
-     + getdate()                               from XPG4.2
-       *** Probably underway
-     + fmtmsg()                                        from SVID
-       *** Probably underway
 
-     More information are available on request.
+     More information is available on request.
 
 
 [14] We need to write a library for on-the-fly transformation of streams