1 /********************************************************************
2 * COPYRIGHT:
3 * Copyright (c) 1999-2002, International Business Machines Corporation and
4 * others. All Rights Reserved.
5 ********************************************************************/
6
7 #include "unicode/unum.h"
8 #include "unicode/ustring.h"
9 #include <stdio.h>
10 #include <stdlib.h>
11
uprintf(const UChar * str)12 static void uprintf(const UChar* str) {
13 char buf[256];
14 u_austrcpy(buf, str);
15 printf("%s", buf);
16 }
17
capi()18 void capi() {
19 UNumberFormat *fmt;
20 UErrorCode status = U_ZERO_ERROR;
21 /* The string "987654321.123" as UChars */
22 UChar str[] = { 0x39, 0x38, 0x37, 0x36, 0x35, 0x34, 0x33,
23 0x32, 0x31, 0x30, 0x2E, 0x31, 0x32, 0x33, 0 };
24 UChar buf[256];
25 int32_t needed;
26 double a;
27
28 /* Create a formatter for the US locale */
29 fmt = unum_open(
30 UNUM_DECIMAL, /* style */
31 0, /* pattern */
32 0, /* patternLength */
33 "en_US", /* locale */
34 0, /* parseErr */
35 &status);
36 if (U_FAILURE(status)) {
37 printf("FAIL: unum_open\n");
38 exit(1);
39 }
40
41 /* Use the formatter to parse a number. When using the C API,
42 we have to specify whether we want a double or a long in advance.
43
44 We pass in NULL for the position pointer in order to get the
45 default behavior which is to parse from the start. */
46 a = unum_parseDouble(fmt, str, u_strlen(str), NULL, &status);
47 if (U_FAILURE(status)) {
48 printf("FAIL: unum_parseDouble\n");
49 exit(1);
50 }
51
52 /* Show the result */
53 printf("unum_parseDouble(\"");
54 uprintf(str);
55 printf("\") => %g\n", a);
56
57 /* Use the formatter to format the same number back into a string
58 in the US locale. The return value is the buffer size needed.
59 We're pretty sure we have enough space, but in a production
60 application one would check this value.
61
62 We pass in NULL for the UFieldPosition pointer because we don't
63 care to receive that data. */
64 needed = unum_formatDouble(fmt, a, buf, 256, NULL, &status);
65 if (U_FAILURE(status)) {
66 printf("FAIL: format_parseDouble\n");
67 exit(1);
68 }
69
70 /* Show the result */
71 printf("unum_formatDouble(%g) => \"", a);
72 uprintf(buf);
73 printf("\"\n");
74
75 /* Release the storage used by the formatter */
76 unum_close(fmt);
77 }
78