Programowanie w systemie UNIX/MPC: Różnice pomiędzy wersjami

 

==Zależności / wymagania ==

* [[Programowanie_w_systemie_UNIX/GMP|gmp]] ≥ 4.3.2,

* biblioteka [[Programowanie_w_systemie_UNIX/MPFR|MPFR]], wersja mpfr ≥ 2.4.2

 

 

 

./configure --prefix=/usr/local/mpc-0.9 --with-gmp=/usr/local/gmp-5.0.2 --with-mpfr=/usr/local/mpfr-3.0.1

 

 

 

<pre>

 

===Synnaptic===

 

 

===git===

 

git clone https://gforge.inria.fr/git/mpc/mpc.git

make check

 

 

<pre>

==Zaokrąglenie==

 

MPC_RNDxy

 

 

* N oznacza do najbliższej liczby (to nearest)

 

 

 

mpc_rnd_t

 

==Format liczb==

** oddzielonych spacją

** otoczona nawiasami

 

 

* bez przedrostka dla liczb dziesiętnych

 

The real and imaginary part may then be written in different bases. For instance, "(1.024e+3 +2.05e+3)" and "(0b1p+10 +0x802)" are valid strings for base=0 and represent the same value."

 

 

3.1415926

 

 

0b101

===mpc_t===

 

 

typedef struct {

typedef __mpc_struct mpc_t[1];

 

 

 

mpc_realref (z)

mpc_imagref (z)

mpc_abs: sqrt(x^2 + y^2)

 

 

 

"Most MPC functions have a return value of type int, which is used to indicate the position of the rounded real and imaginary parts with respect to the exact (infinite precision) values. If this integer is k, the macros MPC_INEX_RE(k) and MPC_INEX_IM(k) give 0 if the corresponding rounded value is exact, a negative value if the rounded value is less than the exact one, and a positive value if it is greater than the exact one. Similarly, functions computing a result of type mpfr_t return an integer that is 0, positive or negative depending on whether the rounded value is the same, larger or smaller then the exact result"

==Jak używać w c ?==

 

* deklaracja zmiennej

* inicjalizacja

* zwolnienie pamięci (ang. freeing)

 

 

 

 

<source lang=c>

</source>

 

 

gcc ... -lmpc -lmpfr -lgmp ...

===asin(2i)===

 

 

<source lang = c>

</source>