patch to add C99 complex

[Marco Atzeri]

The attached patch add C99 Complex to newlib
using all NETBSD source except "long double" ones.

Tested on cygwin:

a = 1.000000+1.000000I
b = 3.141590+1.200000I
a+b = 4.141590+2.200000I
a*b = 1.941590+4.341590I
1/c = 0.500000-0.500000I
-a = -1.000000-1.000000I
abs(a) = 1.414214+0.000000I
cacos(a) = 0.904557-1.061275I
casin(a) = 0.666239+1.061275I
catan(a) = 1.017222+0.402359I
ccos(a) = 0.833730-0.988898I
csin(a) = 1.298458+0.634964I
ctan(a) = 0.271753+1.083923I
cacosh(a) = 1.061275+0.904557I
casinh(a) = 1.061275+0.666239I
catanh(a) = 0.402359+1.017222I
ccosh(a) = 0.833730+0.988898I
csinh(a) = 0.634964+1.298458I
ctanh(a) = 1.083923+0.271753I
cexp(a) = 1.468694+2.287355I
clog(a) = 0.346574+0.785398I
cpow(a,b) = -1.119157+0.295690I
csqrt(a) = 1.098684+0.455090I
carg(a) = 0.785398+0.000000I
cimag(a) = 1.000000+0.000000I
conj(a) = 1.000000-1.000000I
cproj(a) = 1.000000+1.000000I
creal(a) = 1.000000+0.000000I

Regards
Marco


      
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