iostream et STL

[parisse]

Indeed, galois_field works only with RTTI. Replace at_GF by at_nop in static_lexer_at.h and this time it should link (unless there is another problem with libraries).

[Excale]

Built!
Its seems to work correctly on the emulator.
Thanks!

[Excale]

I read the API quick-doc (http://www-fourier.ujf-grenoble.fr/~par ... l#Examples) but I cannot find any reference to UTF-8/unicode.

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        nio::console console_cin;
        console_cin_ptr=&console_cin;
        clrscr();
        giac::context c;

        string s(unicode2utf8(calcul));  // wchar_t* calcul; UTF-16
        console_cin.foreground_color(nio::COLOR_GREEN);
        giac::gen g(s,&c);
        console_cin.foreground_color(nio::COLOR_BLUE);
        g=eval(g,&c);

        COUT << g << endl;         //OK
        COUT << g.print() << endl; //OK

        bkpt();
        utf82unicode(g.print())



utf82unicode returns a string which isn't \0\0 terminated. What did I do wrong?

[parisse]

utf82unicode takes a char * as argument, not a string, the compiler should not compile utf82unicode(g.print()) but utf82unicode(g.print().c_str()) should work and return a 0 terminated wchar_t * (it is allocated using varname=new wchar_t[size+1]; therefore should be deleted by delete [] varname)

[Excale]

Actually, sizeof(wchar_t) seems to be 4. The final 0 is thus placed too far (UTF-16 would rather have a 2-bytes-long char type) with If (wline) wline[j] = 0;.

(plus it stores a 4 bytes \0 instead of a 2 bytes \0)

[Adriweb]

Just for the sake of getting everything to compile, only ustl fails, for me :

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ld (ld-elf2flt): -shared used without passing a shared library ID

I've tried changing some things in the Config.mk, to no avail... :/
How did you get it to link ?

giac works fine with your .a



Edit : well, creating a main.cc with just int main(void) { return 0; }, and removing the "-shared" in slib (config.mk), it did link correctly... and giac still works correctly

[parisse]

Indeed, I was mistaken, unicode is not UTF16 (except maybe on windows?), sizeof(wchar_t)==4 and not 2. It seems there are UTF8 to UTF16 converter in global.cc:

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unsigned int ConvertUTF8toUTF16 (
    const UTF8* sourceStart, const UTF8* sourceEnd,
    UTF16* targetStart, UTF16* targetEnd, ConversionFlags flags);
unsigned int ConvertUTF16toUTF8 (
    const UTF16* sourceStart, const UTF16* sourceEnd,
    UTF8* targetStart, UTF8* targetEnd, ConversionFlags flags);


they just need to be declared in global.h in order to be used.

[Lionel Debroux]

In C11, one can use char16_t and char32_t... but few library functions can deal with those, and C11 support in the real world remains lackluster for now (I faced the problem for libhpcalcs).

[parisse]

Updated:
1/ http://www-fourier.ujf-grenoble.fr/~parisse/calc/giac.tgz to version 1.1.1, including export of utf8 to utf16 conversion functions.
2/ http://www-fourier.ujf-grenoble.fr/~parisse/calc/nspire-io.tar.bz2 change to dtostr (some doubles were not printed correctly at all)
3/ http://www-fourier.ujf-grenoble.fr/~parisse/calc/ndless.tar.bz2: cmath changed, inline definition for abs did not work, changed to

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inline double abs(double d){ return (d<0)?-d:d;}