Remove mpz_perfect_power_p negatives and scan1, done.

Note problem with base indicator for octal floats.
More on mips config.guess endianness.
Add ppc 604 versus 750 gmp-mparam.h.
Add z8k ABI=32 possibility.

1 files changed, 19 insertions, 10 deletions

diff --git a/doc/tasks.html b/doc/tasks.html
index 3d08b6d87..02735e820 100644
--- a/doc/tasks.html
+++ b/doc/tasks.html
@@ -34,7 +34,7 @@ Copyright 2000, 2001 Free Software Foundation, Inc.
 <hr>
 <!-- NB. timestamp updated automatically by emacs -->
 <comment>
-  This file current as of 23 Nov 2001.  An up-to-date version is available at
+  This file current as of 29 Nov 2001.  An up-to-date version is available at
   <a href="http://www.swox.com/gmp/tasks.html">http://www.swox.com/gmp/tasks.html</a>.
   Please send comments about this page to
   <a href="mailto:bug-gmp@gnu.org">bug-gmp@gnu.org</a>.
@@ -166,10 +166,8 @@ Copyright 2000, 2001 Free Software Foundation, Inc.
 <li> <code>mpz_perfect_power_p</code> could be improved in a number of ways.
      Test for Nth power residues modulo small primes like
      <code>mpn_perfect_square_p</code> does.  Use p-adic arithmetic to find
-     possible roots.  Negatives should be handled, and used to know the power
-     must be odd.  Divisibility by powers of 2 should be tested with
-     <code>mpz_scan1</code> or similar.  Divisibility by other primes should
-     be tested by grouping into a limb like <code>PP</code>.
+     possible roots.  Divisibility by other primes should be tested by
+     grouping into a limb like <code>PP</code>.
 <li> <code>mpz_perfect_power_p</code> might like to use <code>mpn_gcd_1</code>
      instead of a private GCD routine.  The use it's put to isn't
      time-critical, and it might help be ensure correctness to use the main GCD
@@ -559,7 +557,8 @@ Copyright 2000, 2001 Free Software Foundation, Inc.
 <li> <code>mpf_set_str</code> and <code>mpf_inp_str</code> could usefully
      accept 0x, 0b etc when base==0.  Perhaps the exponent could default to
      decimal in this case, with a further 0x, 0b etc allowed there.
-     Eg. 0xFFAA@0x5A.
+     Eg. 0xFFAA@0x5A.  A leading "0" for octal would match the integers, but
+     probably something like "0.123" ought not mean octal.
 <li> <code>GMP_LONG_LONG_LIMB</code> or some such could become a documented
      feature of gmp.h, so applications could know whether to
      <code>printf</code> a limb using <code>%lu</code> or <code>%Lu</code>.
@@ -606,16 +605,23 @@ Copyright 2000, 2001 Free Software Foundation, Inc.
 <li> Mips: Rename `mips2' =&gt; `mips32' and `mips3' =&gt; `mips64'.
 <li> Mips: config.guess should say mipsr3000, mipsr4000, mipsr10000, etc.
      "hinv -c processor" gives lots of information on Irix.  Standard
-     config.guess etc append "el" to indicate endianness, but GMP probably
-     doesn't care about endianness and could forget about that.
+     config.guess etc append "el" to indicate endianness.  GMP probably
+     doesn't care about endianness for normal limb operations, but might if
+     attempting to optimize bytes&lt;-&gt;limbs conversions.  Perhaps
+     mipsr3000el and mipsr3000eb should be accepted, either that or see if
+     there's a good way to ask the compiler if it knows the endianness.
 <li> Mips: IRIX 6.5 "as" doesn't like the <code>.byte</code> used in
      <code>GMP_ASM_LSYM_PREFIX</code> because it's data being emitted in the
      text section.  It also complains about lacking
-     <code>.ent</code>/<code>.end</code> directives.  The <code>L</code> is
-     probably right, but perhaps the test should be improved.
+     <code>.ent</code>/<code>.end</code> directives.  The fallback
+     <code>L</code> is probably right, but perhaps the test should be
+     improved.
 <li> Power: config.guess might be able to use AIX 4
      <code>_system_configuration.implementation</code> for more accurate CPU
      determination.
+<li> PowerPC-32: gmp-mparam.h comes out quite different for a 750 than a 604e,
+     it'd be good to select the right one, probably by having CPU types
+     powerpc604, powerpc750 etc.
 <li> Sparc: config.guess should say supersparc, microsparc, ultrasparc1,
      ultrasparc2, etc.  "prtconf -vp" gives lots of information about a
      Solaris system.
@@ -654,6 +660,9 @@ Copyright 2000, 2001 Free Software Foundation, Inc.
 <li> m88k: Make the assembler code work on non-underscore systems.  Conversion
      to .asm would be desirable.  Ought to be easy, but would want to be
      tested.
+<li> z8k: The use of a 32-bit limb in mpn/z8000x as opposed to 16-bits in
+     mpn/z8000 could be an ABI choice.  But this chip is obsolete and nothing
+     is likely to be done unless someone is actively using it.
 <li> config.m4 is generated only by the configure script, it won't be
      regenerated by config.status.  Creating it as an <code>AC_OUTPUT</code>
      would work, but it might upset "make" to have things like <code>L$</code>