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/* Copyright (C) 2000 Damir Zucic */
/*=============================================================================
ex2doubles.c
Purpose:
Extract two double values from a string.
Input:
(1) Pointer to the first double value.
(2) Pointer to the second double value.
(3) Input string pointer.
Output:
(1) The first double value.
(2) The second double value.
(3) Return value.
Return value:
(1) Positive on success.
(2) Negative on failure.
========includes:============================================================*/
#include <stdio.h>
#include <string.h>
#include <ctype.h>
/*======extract two double values from a string:=============================*/
int ExtractTwoDoubles_ (double *value1P, double *value2P, char *sP)
{
char *P0, *P1;
int n;
static double d1, d2;
/* Colon should be separator: */
if ((P0 = strstr (sP, ":")) == NULL) P0 = sP;
else P0++;
/* Replace each non-numeric character (except */
/* minus sign and decimal point) with space: */
P1 = P0;
while ((n = *P1++) != '\0')
{
if (!isdigit (n) && (n != '-') && (n != '.')) *(P1 - 1) = ' ';
}
/* Try to read two double values: */
if (sscanf (P0, " %lf %lf", &d1, &d2) != 2) return -1;
/* On success, copy the extracted values: */
*value1P = d1;
*value2P = d2;
/* If everything worked fine, return positive integer: */
return 1;
}
/*===========================================================================*/
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