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locks; strict;
comment	@# @;


1.1
date	2020.09.26.07.25.42;	author mrg;	state Exp;
branches
	1.1.1.1;
next	;
commitid	uDXWuNicgnpBNwpC;

1.1.1.1
date	2020.09.26.07.25.42;	author mrg;	state Exp;
branches;
next	1.1.1.2;
commitid	uDXWuNicgnpBNwpC;

1.1.1.2
date	2023.03.05.22.08.38;	author mrg;	state Exp;
branches;
next	;
commitid	AcBV1jKMu2z25ZfE;


desc
@@


1.1
log
@Initial revision
@
text
@How to compile GNU MPFR with mini-gmp
=====================================

To build and test MPFR against mini-gmp:

  ./configure --with-mini-gmp=DIR [other configure options]
  make
  make check

where DIR is the directory that contains mini-gmp
(for example .../gmp-6.2.0/mini-gmp).

"make" will build mini-gmp with the same compiler as for MPFR.

For "make check", tests that use features not supported by mini-gmp
(mpq_t, mpf_t, and the gmp_*printf functions) are skipped.

Note: To use this version of the MPFR library, you need to define
the MPFR_USE_MINI_GMP macro before including mpfr.h (alternatively,
you can modify mpfr.h to define this macro at the beginning, though
this is discouraged). And since mini-gmp currently does not provide
random functions, you also need to define the gmp_randstate_t type
with

  typedef long int gmp_randstate_t[1];

before including mpfr.h (or you may want to modify mini-gmp.h).

Remark: The random functions provided by MPFR configured with mini-gmp
use the POSIX lrand48() and srand48() functions (the platform needs to
provide them), thus one should avoid mini-gmp if one needs some really
serious random functions. Another consequence is that these functions
are not thread-safe.

This was tested with MPFR svn r13974 and GMP 6.2.0 on x86_64 GNU/Linux:
============================================================================
Testsuite summary for MPFR 4.1.0-dev
============================================================================
# TOTAL: 183
# PASS:  172
# SKIP:  11
# XFAIL: 0
# FAIL:  0
# XPASS: 0
# ERROR: 0
============================================================================

How to use mini-gmp with reduced limb size
==========================================

Following the idea of Micro-GMP [1], the GMP developers have adapted mini-gmp
so that it can be used with a reduced limb size. For that, you need GMP 6.2.0
(or later) and define the MINI_GMP_LIMB_TYPE macro with the associated base
type, e.g.

  -DMINI_GMP_LIMB_TYPE=char   (in practice, 8 bits)
  -DMINI_GMP_LIMB_TYPE=short  (in practice, 16 bits)
  -DMINI_GMP_LIMB_TYPE=int    (in practice, 32 bits)

For example:

  ./configure --with-mini-gmp=DIR CFLAGS="-DMINI_GMP_LIMB_TYPE=int"

This was tested with MPFR svn r13974 and GMP 6.2.0 on x86_64 GNU/Linux:
============================================================================
Testsuite summary for MPFR 4.1.0-dev
============================================================================
# TOTAL: 183
# PASS:  172
# SKIP:  11
# XFAIL: 0
# FAIL:  0
# XPASS: 0
# ERROR: 0
============================================================================

[1] https://members.loria.fr/PZimmermann/talks/microgmp.pdf
@


1.1.1.1
log
@GNU mpfr 4.1.0.  main changes from 4.0:

Changed __float128 to the type _Float128 specified in ISO/IEC TS 18661.
__float128 is used as a fallback if _Float128 is not supported.
New function mpfr_get_str_ndigits about conversion to a string of digits.
New function mpfr_dot for the dot product (incomplete, experimental).
New functions mpfr_get_decimal128 and mpfr_set_decimal128 (available
only when MPFR has been built with decimal float support).
New function mpfr_cmpabs_ui.
New function mpfr_total_order_p for the IEEE 754 totalOrder predicate.
The mpfr_out_str function now accepts bases from -2 to -36, in order to
follow mpfr_get_str and GMP's mpf_out_str functions (these cases gave an
assertion failure, as with other invalid bases).
Shared caches: cleanup; really detect lock failures (abort in this case).
Improved mpfr_add and mpfr_sub when all operands have a precision
equal to twice the number of bits per word, e.g., 128 bits on a 64-bit
platform.
Optimized the tuning parameters for various architectures.
@
text
@@


1.1.1.2
log
@initial import of MPFR 4.2.0.  changes from 4.1.0 include:

Binary compatible with MPFR 4.0.* and 4.1.*, though some minor changes
in the behavior of the formatted output functions may be visible,
regarded as underspecified behavior or bug fixes (see below).

New functions mpfr_cosu, mpfr_sinu, mpfr_tanu, mpfr_acosu, mpfr_asinu,
mpfr_atanu and mpfr_atan2u.

New functions mpfr_cospi, mpfr_sinpi, mpfr_tanpi, mpfr_acospi,
mpfr_asinpi, mpfr_atanpi and mpfr_atan2pi.

New functions mpfr_log2p1, mpfr_log10p1, mpfr_exp2m1, mpfr_exp10m1 and
mpfr_compound_si.

New functions mpfr_fmod_ui, mpfr_powr, mpfr_pown, mpfr_pow_uj,
mpfr_pow_sj and mpfr_rootn_si (mpfr_pown is actually a macro defined as
an alias for mpfr_pow_sj).

Bug fixes.
- In particular, for the formatted output functions (mpfr_printf, etc.),
the case where the precision consists only of a period has been fixed to
be like .0 as specified in the ISO C standard, and the manual has been
corrected and clarified.
- The macros of the custom interface have also been fixed:
they now behave like functions (except a minor limitation for
mpfr_custom_init_set).
@
text
@d30 4
a33 3
use the standard rand() function, thus one should avoid mini-gmp if one
needs some really serious random functions. Another consequence is that
these functions may not be thread-safe.
d35 1
a35 3
The build with mini-gmp may require ISO C99+ features, such as "long long".

This was tested with revision 39ac9e4 and GMP 6.2.0 on x86_64 GNU/Linux:
d64 1
a64 1
This was tested with revision 39ac9e4 and GMP 6.2.0 on x86_64 GNU/Linux:
@