Olds
Version 1.2.1, "Hyacinthus orientalis", released in October 2020, comes with the following new features:

Bug fixes:
 Fix an incompatibility problem with GMP 6.0 and before.
 Fix an intermediate overflow in asin.
Version 1.2.0, "Hyacinthus orientalis", released in August 2020, comes with the following new features:
 Minimally required library version: mpfr 4.1.0

New functions:
mpc_sum
mpc_dot
 Several functions are more robust with a reduced exponent range (for example corresponding to IEEE 754 binary formats).

New
mpcheck
tool for comparison with the native C library
Version 1.1.0, "Gladiolus palustris", released in January 2018, comes with the following new features:
 Minimally required library versions: gmp 5.0.0, mpfr 3.0.0

New functions:
mpc_cmp_abs
mpc_rootofunity
 Rewrite of the testing framework

New
mpcbench
tool, used withmake bench

Bug fixes and improvements of existing functions:
 Fixed compilation with mpfr 4.0.0

Fixed
handling of over and underflows with directed rounding in the
"other direction" for
mpc_cos
,mpc_sin
,mpc_exp
andmpc_pow

Fixed a bug in
mpc_atan(0,y)
with y near 1
Version 1.0.3, "Fagus silvatica", released in February 2015, comes with the following bug fixes:

Fixed
mpc_pow
 Switched to libtool 2.4.5
The third MPFR/MPC developer meeting has been held in Nancy from January 20 to 22, 2014.
Version 1.0.2, "Fagus silvatica", released in January 2014, comes with the following bug fixes:

Fixed
mpc_atan
,mpc_atanh
for (+0, +1) 
Fixed
mpc_log10
for purely imaginary argument
Version 1.0.1, "Fagus silvatica", released in September 2012, comes with the following bug fixes:
 Switched to automake 1.11.6, see CVE20123386

Fixed extraction of
CC
fromgmp.h

Fixed case of intermediate zero real or imaginary part in
mpc_fma
, found by hydra withGMP_CHECK_RANDOMIZE=1346362345
Version 1.0, "Fagus silvatica", released in July 2012, comes with the following new features:
 First release as a GNU package
 Licence change towards LGPLv3+ for the code and GFDLv1.3+ (with no invariant sections) for the documentation
 100% of all lines are covered by tests

Renamed functions
mpc_mul_2exp
tompc_mul_2ui
mpc_div_2exp
tompc_div_2ui
 0^0, which returned (NaN,NaN) previously, now returns (1,+0)
 Removed compatibility with K&R compilers, which was untestable due to lack of such compilers

New functions
mpc_log10
mpc_mul_2si
,mpc_div_2si

Speedups
mpc_fma

Bug fixes

mpc_div
andmpc_norm
now return a value indicating the effective rounding direction, as the other functions 
mpc_mul
,mpc_sqr
andmpc_norm
now return correct results even if there are over or underflows during the computation 
mpc_asin
,mpc_proj
,mpc_sqr
: Wrong result when input variable has infinite part and equals output variable is corrected 
mpc_fr_sub
: Wrong return value for imaginary part is corrected

The second MPFR/MPC developer meeting has been held in Bordeaux from June 25 to 27, 2012.
Version 0.9, "Epilobium montanum", released in February 2011, comes with the following new features:

New functions

mpc_set_dc
,mpc_set_ldc
,mpc_get_dc
,mpc_get_ldc
for converting between mpc type variables and C variables of typedouble _Complex
orlong double _Complex

mpc_sin_cos
, computing simultaneously the sine and cosine


Speedups

mpc_pow_si
through binary exponentiation 
mpc_pow_z
when the exponent fits in a long 
mpc_tan
through the use ofmpc_sin_cos


Bug fixes
 trigonometric functions: infinite loop due to overflow for large arguments

exp
: close to infinite loop for argument close to 0 
sqrt
: close to infinite loop for argument close to 1 
add_si
: replaced macro by function, since the macro evaluated the same expression twice

Logging feature for debugging
./configure enablelogging
#include "mpclog.h"
instead of#include "mpc.h"
 Minimally required library versions: gmp 4.3.2, mpfr 2.4.2
Version 0.8.2, "Dianthus deltoides", released in May 2010, comes with the following new features:

Speedup of
mpc_pow_ui
through binary exponentiation
Version 0.8.1, "Dianthus deltoides", released in December 2009, comes with the following new features:

Bug fixes:

acosh
,asinh
,atanh
: swap of precisions between real and imaginary parts 
atan
: memory leak 
log
: wrong ternary value in data file; masked by bug in MPFR 2.4.1

Version 0.8, "Dianthus deltoides", released in November 2009, comes with the following new features:

New functions:

Inverse trigonometric functions:
mpc_asin
,mpc_acos
,mpc_atan
,mpc_asinh
,mpc_acosh
,mpc_atanh

Power functions:
mpc_pow_d
,mpc_pow_ld
,mpc_pow_si
,mpc_pow_ui
,mpc_pow_z
,mpc_pow_fr

Inverse trigonometric functions:

Bug fixes:

ui_div
: real divisor

Version 0.7, "Campanula uniflora", released in September 2009, comes with the following new features:

New functions:
mpc_pow
,mpc_set_nan
,mpc_swap

Bug fixes:

log
: along branch cut 
norm
: infinite loop in case of overflow 
ui_div
,div
,fr_div
: handling of division by 0 and infinities following the example code of the C99 standard  compilation with g++

 Makefile.vc updated (thanks to Mickael Gastineau)
 Minimal gmp version is 4.2

Changed
MPC_SET_X_Y
macro 
Functions
mpc_random
andmpc_random2
removed
Version 0.6, "Bellis perennis", released in April 2009, comes with the following new features:

New functions:
mpc_get_str
,mpc_set_str
,mpc_strtoc
,mpc_set_uj
,mpc_set_sj
,mpc_set_ld
,mpc_set_ld_ld
,mpc_set_si_si
,mpc_set_uj
,mpc_set_sj
,mpc_set_uj_uj
,mpc_set_sj_sj
,mpc_set_f
,mpc_set_f_f
,mpc_set_q
,mpc_set_q_q
,mpc_set_z
,mpc_set_z_z
andmpc_free_str

New macro:
MPC_SET_X_Y

mpc_set_ui_fr
removed 
Default precision removed, as well as
init
and allinit_set
combinations; useinit2
andinit3
, followed byset
, instead 
exp
,log
,cos
,sin
,tan
,cosh
,sinh
,tanh
andsqrt
return inexact value 
inp_str
returns inexact value and the number of read characters in an additional parameter  Get default
$CC
and$CFLAGS
fromgmp.h
(__GMP_CC
/__GMP_CFLAGS
, which are available as of GMP 4.2.3) 
Bug fixes:

mpc_get_version
andMPC_VERSION_STRING
agree 
Compilation on
i686pccygwin
andi686pcmingw32
fixed

Version 0.5.2, "Aconitum neomontanum", released in December 2008, comes with the following new features:

New macros

Version number:
MPC_VERSION
,MPC_VERSION_NUM

Version number:
 Updated Makefile.vc (thanks to Mickaël Gastineau)
 Compilation fixes for DebianGnuLinuxPowerPC and MacOsX (thanks to Laurent Fousse and Mickaël Gastineau)
Version 0.5.1, "Aconitum neomontanum", released in November 2008, comes with the following new features:

New functions

set_fr_fr

real
,imag

arg
,proj


New macros

Version number:
MPC_VERSION_MAJOR
,MPC_VERSION_MINOR
,MPC_VERSION_PATCHLEVEL
,MPC_VERSION_STRING

References to number parts:
realref
,imagref

Version number:
 Rewritten test framework, leading to many...

Bug fixes

configure
looks forgmp
(>= 4.2) first, then formpfr
(>= 2.3.1) 
cos
,div
,div_fr
,fr_sub
,mul_fr
,set_fr
,sqr

fixed handling of special values:
exp
,log
,mul
,norm
,sqr
,sqrt


Optimisations:
mul_fr
,sin
,cos

New
configure
options:withgmplib
,withgmpinclude
,withmpfrlib
,withmpfrinclude

Export declarations for MSWindows,
makefile.vc
updated (contributed by Mickaël Gastineau)