1 /********************************************************************
2 * Copyright (C) 2016 and later: Unicode, Inc. and others.
3 * License & terms of use: http://www.unicode.org/copyright.html#License
4 *************************************************************************
5 *************************************************************************
6 * COPYRIGHT:
7 * Copyright (c) 1999-2002, International Business Machines Corporation and
8 * others. All Rights Reserved.
9 *************************************************************************/
10
11 #include "unicode/unum.h"
12 #include "unicode/ustring.h"
13 #include <stdio.h>
14 #include <stdlib.h>
15
uprintf(const UChar * str)16 static void uprintf(const UChar* str) {
17 char buf[256];
18 u_austrcpy(buf, str);
19 printf("%s", buf);
20 }
21
capi()22 void capi() {
23 UNumberFormat *fmt;
24 UErrorCode status = U_ZERO_ERROR;
25 /* The string "987654321.123" as UChars */
26 UChar str[] = { 0x39, 0x38, 0x37, 0x36, 0x35, 0x34, 0x33,
27 0x32, 0x31, 0x30, 0x2E, 0x31, 0x32, 0x33, 0 };
28 UChar buf[256];
29 int32_t needed;
30 double a;
31
32 /* Create a formatter for the US locale */
33 fmt = unum_open(
34 UNUM_DECIMAL, /* style */
35 0, /* pattern */
36 0, /* patternLength */
37 "en_US", /* locale */
38 0, /* parseErr */
39 &status);
40 if (U_FAILURE(status)) {
41 printf("FAIL: unum_open\n");
42 exit(1);
43 }
44
45 /* Use the formatter to parse a number. When using the C API,
46 we have to specify whether we want a double or a long in advance.
47
48 We pass in NULL for the position pointer in order to get the
49 default behavior which is to parse from the start. */
50 a = unum_parseDouble(fmt, str, u_strlen(str), NULL, &status);
51 if (U_FAILURE(status)) {
52 printf("FAIL: unum_parseDouble\n");
53 exit(1);
54 }
55
56 /* Show the result */
57 printf("unum_parseDouble(\"");
58 uprintf(str);
59 printf("\") => %g\n", a);
60
61 /* Use the formatter to format the same number back into a string
62 in the US locale. The return value is the buffer size needed.
63 We're pretty sure we have enough space, but in a production
64 application one would check this value.
65
66 We pass in NULL for the UFieldPosition pointer because we don't
67 care to receive that data. */
68 needed = unum_formatDouble(fmt, a, buf, 256, NULL, &status);
69 if (U_FAILURE(status)) {
70 printf("FAIL: format_parseDouble\n");
71 exit(1);
72 }
73
74 /* Show the result */
75 printf("unum_formatDouble(%g) => \"", a);
76 uprintf(buf);
77 printf("\"\n");
78
79 /* Release the storage used by the formatter */
80 unum_close(fmt);
81 }
82