1 /* vi: set sw=4 ts=4: */
5 * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
7 * Licensed under GPLv2 or later, see file LICENSE in this source tree.
11 #include <math.h> /* just for HUGE_VAL */
13 #define NOT_DIGIT(a) (((unsigned char)(a-'0')) > 9)
16 double FAST_FUNC
bb_strtod(const char *arg
, char **endp
)
21 /* Allow .NN form. People want to use "sleep .15" etc */
22 if (arg
[0] != '-' && arg
[0] != '.' && NOT_DIGIT(arg
[0]))
25 v
= strtod(arg
, &endptr
);
29 /* "1234abcg" or out-of-range? */
30 if (isalnum(endptr
[0]) || errno
) {
35 /* good number, just suspicious terminator */
43 /* String to timespec: "NNNN[.NNNNN]" -> struct timespec.
44 * Can be used for other fixed-point needs.
45 * Returns pointer past last converted char,
46 * and returns errno similar to bb_strtoXX functions.
48 char* FAST_FUNC
bb_str_to_ts(struct timespec
*ts
, const char *arg
)
50 if (sizeof(ts
->tv_sec
) <= sizeof(int))
51 ts
->tv_sec
= bb_strtou(arg
, &arg
, 10);
52 else if (sizeof(ts
->tv_sec
) <= sizeof(long))
53 ts
->tv_sec
= bb_strtoul(arg
, &arg
, 10);
55 ts
->tv_sec
= bb_strtoull(arg
, &arg
, 10);
61 /* !EINVAL: number is not ok (alphanumeric ending, overflow etc) */
65 if (!*++arg
) /* "NNN." */
68 { /* "NNN.xxx" - parse xxx */
71 char buf
[10]; /* we never use more than 9 digits */
73 /* Need to make a copy to avoid false overflow */
74 safe_strncpy(buf
, arg
, 10);
75 ts
->tv_nsec
= bb_strtou(buf
, &p
, 10);
78 /* normalize to nsec */
83 while (isdigit(*arg
)) /* skip possible 10th plus digits */