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#include <stdio.h>
#include <locale.h>
#include <caml/memory.h>
#include <caml/alloc.h>
#ifndef _vscprintf
/* For some reason, MSVC fails to honour this #ifndef. */
/* Hence function renamed to _vscprintf_so(). */
int _vscprintf_so(const char * format, va_list pargs) {
int retval;
va_list argcopy;
va_copy(argcopy, pargs);
retval = vsnprintf(NULL, 0, format, argcopy);
va_end(argcopy);
return retval;}
#endif // _vscprintf
#ifndef vasprintf
int vasprintf(char **strp, const char *fmt, va_list ap) {
int len = _vscprintf_so(fmt, ap);
if (len == -1) return -1;
char *str = malloc((size_t) len + 1);
if (!str) return -1;
int r = vsnprintf(str, len + 1, fmt, ap); /* "secure" version of vsprintf */
if (r == -1) return free(str), -1;
*strp = str;
return r;}
#endif // vasprintf
#ifndef asprintf
int asprintf(char *strp[], const char *fmt, ...) {
va_list ap;
va_start(ap, fmt);
int r = vasprintf(strp, fmt, ap);
va_end(ap);
return r;}
#endif // asprintf
CAMLprim value show_float(value locale_param, value float_param )
{
CAMLparam2(locale_param, float_param );
CAMLlocal1( ml_data );
double f = Double_val(float_param);
char* raw_data;
const char *s;
s = String_val(locale_param);
const char *saved_locale = setlocale(LC_NUMERIC, s);
int data_len = asprintf(&raw_data, "%f", f);
setlocale(LC_NUMERIC, saved_locale);
ml_data = caml_copy_string( raw_data );
free(raw_data);
CAMLreturn( ml_data );
}
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