/* START LIBRARY DESCRIPTION *********************************************
FLOAT.LIB
	Copyright (c) 2006, Avtech Electrosystems Ltd.

DESCRIPTION:
	Functions that deal with strings and floating point numbers.

SUPPORT LIB'S:
END DESCRIPTION **********************************************************/


#include <string.h>
#include <ctype.h>
#include <math.h>
#include <glib/gprintf.h>
#include "globals.h"
#include "string_utils.h"

void Float_To_Text(int decimal_digits,float number_in, gchar ** text_out)
{
	g_assert (*text_out == NULL);

	if (fabs(number_in)<1.1*smallest_allowed_number) {
		if (number_in<0.0) {
			*text_out = g_strdup_printf("-0.%0*d",decimal_digits,0);
		} else {
			*text_out = g_strdup_printf("0.%0*d",decimal_digits,0);
		}
		return;
	}

	*text_out = g_strdup_printf("%.*e", decimal_digits, number_in);
}


/*----------------------------------------------------------------------------------------------------------*/
gboolean String_is_it_numeric(char *parameter)
{

	GRegex *numeric_regex = g_regex_new (	"\\s*[+-]?(\\d*\\.\\d+|\\d+(\\.\\d*)?)\\s*(e\\s*[+-]?\\d+)?\\s*",
	                                        G_REGEX_CASELESS,
	                                        0,
	                                        NULL);

	gboolean match = g_regex_match (numeric_regex, parameter, 0, NULL);
	g_regex_unref (numeric_regex);
	return match;
}