src/util.c

#include "fmacros.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <limits.h>
#include <math.h>

#include "util.h"

/* Glob-style pattern matching. */
int stringmatchlen(const char *pattern, int patternLen,
        const char *string, int stringLen, int nocase)
{
    while(patternLen) {
        switch(pattern[0]) {
        case '*':
            while (pattern[1] == '*') {
                pattern++;
                patternLen--;
            }
            if (patternLen == 1)
                return 1; /* match */
            while(stringLen) {
                if (stringmatchlen(pattern+1, patternLen-1,
                            string, stringLen, nocase))
                    return 1; /* match */
                string++;
                stringLen--;
            }
            return 0; /* no match */
            break;
        case '?':
            if (stringLen == 0)
                return 0; /* no match */
            string++;
            stringLen--;
            break;
        case '[':
        {
            int not, match;

            pattern++;
            patternLen--;
            not = pattern[0] == '^';
            if (not) {
                pattern++;
                patternLen--;
            }
            match = 0;
            while(1) {
                if (pattern[0] == '\\') {
                    pattern++;
                    patternLen--;
                    if (pattern[0] == string[0])
                        match = 1;
                } else if (pattern[0] == ']') {
                    break;
                } else if (patternLen == 0) {
                    pattern--;
                    patternLen++;
                    break;
                } else if (pattern[1] == '-' && patternLen >= 3) {
                    int start = pattern[0];
                    int end = pattern[2];
                    int c = string[0];
                    if (start > end) {
                        int t = start;
                        start = end;
                        end = t;
                    }
                    if (nocase) {
                        start = tolower(start);
                        end = tolower(end);
                        c = tolower(c);
                    }
                    pattern += 2;
                    patternLen -= 2;
                    if (c >= start && c <= end)
                        match = 1;
                } else {
                    if (!nocase) {
                        if (pattern[0] == string[0])
                            match = 1;
                    } else {
                        if (tolower((int)pattern[0]) == tolower((int)string[0]))
                            match = 1;
                    }
                }
                pattern++;
                patternLen--;
            }
            if (not)
                match = !match;
            if (!match)
                return 0; /* no match */
            string++;
            stringLen--;
            break;
        }
        case '\\':
            if (patternLen >= 2) {
                pattern++;
                patternLen--;
            }
            /* fall through */
        default:
            if (!nocase) {
                if (pattern[0] != string[0])
                    return 0; /* no match */
            } else {
                if (tolower((int)pattern[0]) != tolower((int)string[0]))
                    return 0; /* no match */
            }
            string++;
            stringLen--;
            break;
        }
        pattern++;
        patternLen--;
        if (stringLen == 0) {
            while(*pattern == '*') {
                pattern++;
                patternLen--;
            }
            break;
        }
    }
    if (patternLen == 0 && stringLen == 0)
        return 1;
    return 0;
}

int stringmatch(const char *pattern, const char *string, int nocase) {
    return stringmatchlen(pattern,strlen(pattern),string,strlen(string),nocase);
}

/* Convert a string representing an amount of memory into the number of
 * bytes, so for instance memtoll("1Gi") will return 1073741824 that is
 * (1024*1024*1024).
 *
 * On parsing error, if *err is not NULL, it's set to 1, otherwise it's
 * set to 0 */
long long memtoll(const char *p, int *err) {
    const char *u;
    char buf[128];
    long mul; /* unit multiplier */
    long long val;
    unsigned int digits;

    if (err) *err = 0;
    /* Search the first non digit character. */
    u = p;
    if (*u == '-') u++;
    while(*u && isdigit(*u)) u++;
    if (*u == '\0' || !strcasecmp(u,"b")) {
        mul = 1;
    } else if (!strcasecmp(u,"k")) {
        mul = 1000;
    } else if (!strcasecmp(u,"kb")) {
        mul = 1024;
    } else if (!strcasecmp(u,"m")) {
        mul = 1000*1000;
    } else if (!strcasecmp(u,"mb")) {
        mul = 1024*1024;
    } else if (!strcasecmp(u,"g")) {
        mul = 1000L*1000*1000;
    } else if (!strcasecmp(u,"gb")) {
        mul = 1024L*1024*1024;
    } else {
        if (err) *err = 1;
        mul = 1;
    }
    digits = u-p;
    if (digits >= sizeof(buf)) {
        if (err) *err = 1;
        return LLONG_MAX;
    }
    memcpy(buf,p,digits);
    buf[digits] = '\0';
    val = strtoll(buf,NULL,10);
    return val*mul;
}

/* Convert a long long into a string. Returns the number of
 * characters needed to represent the number, that can be shorter if passed
 * buffer length is not enough to store the whole number. */
int ll2string(char *s, size_t len, long long value) {
    char buf[32], *p;
    unsigned long long v;
    size_t l;

    if (len == 0) return 0;
    v = (value < 0) ? -value : value;
    p = buf+31; /* point to the last character */
    do {
        *p-- = '0'+(v%10);
        v /= 10;
    } while(v);
    if (value < 0) *p-- = '-';
    p++;
    l = 32-(p-buf);
    if (l+1 > len) l = len-1; /* Make sure it fits, including the nul term */
    memcpy(s,p,l);
    s[l] = '\0';
    return l;
}

/* Convert a string into a long long. Returns 1 if the string could be parsed
 * into a (non-overflowing) long long, 0 otherwise. The value will be set to
 * the parsed value when appropriate. */
int string2ll(char *s, size_t slen, long long *value) {
    char *p = s;
    size_t plen = 0;
    int negative = 0;
    unsigned long long v;

    if (plen == slen)
        return 0;

    /* Special case: first and only digit is 0. */
    if (slen == 1 && p[0] == '0') {
        if (value != NULL) *value = 0;
        return 1;
    }

    if (p[0] == '-') {
        negative = 1;
        p++; plen++;

        /* Abort on only a negative sign. */
        if (plen == slen)
            return 0;
    }

    /* First digit should be 1-9, otherwise the string should just be 0. */
    if (p[0] >= '1' && p[0] <= '9') {
        v = p[0]-'0';
        p++; plen++;
    } else if (p[0] == '0' && slen == 1) {
        *value = 0;
        return 1;
    } else {
        return 0;
    }

    while (plen < slen && p[0] >= '0' && p[0] <= '9') {
        if (v > (ULLONG_MAX / 10)) /* Overflow. */
            return 0;
        v *= 10;

        if (v > (ULLONG_MAX - (p[0]-'0'))) /* Overflow. */
            return 0;
        v += p[0]-'0';

        p++; plen++;
    }

    /* Return if not all bytes were used. */
    if (plen < slen)
        return 0;

    if (negative) {
        if (v > ((unsigned long long)(-(LLONG_MIN+1))+1)) /* Overflow. */
            return 0;
        if (value != NULL) *value = -v;
    } else {
        if (v > LLONG_MAX) /* Overflow. */
            return 0;
        if (value != NULL) *value = v;
    }
    return 1;
}

/* Convert a string into a long. Returns 1 if the string could be parsed into a
 * (non-overflowing) long, 0 otherwise. The value will be set to the parsed
 * value when appropriate. */
int string2l(char *s, size_t slen, long *lval) {
    long long llval;

    if (!string2ll(s,slen,&llval))
        return 0;

    if (llval < LONG_MIN || llval > LONG_MAX)
        return 0;

    *lval = (long)llval;
    return 1;
}

/* Convert a double to a string representation. Returns the number of bytes
 * required. The representation should always be parsable by stdtod(3). */
int d2string(char *buf, size_t len, double value) {
    if (isnan(value)) {
        len = snprintf(buf,len,"nan");
    } else if (isinf(value)) {
        if (value < 0)
            len = snprintf(buf,len,"-inf");
        else
            len = snprintf(buf,len,"inf");
    } else if (value == 0) {
        /* See: http://en.wikipedia.org/wiki/Signed_zero, "Comparisons". */
        if (1.0/value < 0)
            len = snprintf(buf,len,"-0");
        else
            len = snprintf(buf,len,"0");
    } else {
#if (DBL_MANT_DIG >= 52) && (LLONG_MAX == 0x7fffffffffffffffLL)
        /* Check if the float is in a safe range to be casted into a
         * long long. We are assuming that long long is 64 bit here.
         * Also we are assuming that there are no implementations around where
         * double has precision < 52 bit.
         *
         * Under this assumptions we test if a double is inside an interval
         * where casting to long long is safe. Then using two castings we
         * make sure the decimal part is zero. If all this is true we use
         * integer printing function that is much faster. */
        double min = -4503599627370495; /* (2^52)-1 */
        double max = 4503599627370496; /* -(2^52) */
        if (val > min && val < max && value == ((double)((long long)value)))
            len = ll2string(buf,len,(long long)value);
        else
#endif
            len = snprintf(buf,len,"%.17g",value);
    }

    return len;
}

#ifdef UTIL_TEST_MAIN
#include <assert.h>

void test_string2ll(void) {
    char buf[32];
    long long v;

    /* May not start with +. */
    strcpy(buf,"+1");
    assert(string2ll(buf,strlen(buf),&v) == 0);

    /* Leading space. */
    strcpy(buf," 1");
    assert(string2ll(buf,strlen(buf),&v) == 0);

    /* Trailing space. */
    strcpy(buf,"1 ");
    assert(string2ll(buf,strlen(buf),&v) == 0);

    /* May not start with 0. */
    strcpy(buf,"01");
    assert(string2ll(buf,strlen(buf),&v) == 0);

    strcpy(buf,"-1");
    assert(string2ll(buf,strlen(buf),&v) == 1);
    assert(v == -1);

    strcpy(buf,"0");
    assert(string2ll(buf,strlen(buf),&v) == 1);
    assert(v == 0);

    strcpy(buf,"1");
    assert(string2ll(buf,strlen(buf),&v) == 1);
    assert(v == 1);

    strcpy(buf,"99");
    assert(string2ll(buf,strlen(buf),&v) == 1);
    assert(v == 99);

    strcpy(buf,"-99");
    assert(string2ll(buf,strlen(buf),&v) == 1);
    assert(v == -99);

    strcpy(buf,"-9223372036854775808");
    assert(string2ll(buf,strlen(buf),&v) == 1);
    assert(v == LLONG_MIN);

    strcpy(buf,"-9223372036854775809"); /* overflow */
    assert(string2ll(buf,strlen(buf),&v) == 0);

    strcpy(buf,"9223372036854775807");
    assert(string2ll(buf,strlen(buf),&v) == 1);
    assert(v == LLONG_MAX);

    strcpy(buf,"9223372036854775808"); /* overflow */
    assert(string2ll(buf,strlen(buf),&v) == 0);
}

void test_string2l(void) {
    char buf[32];
    long v;

    /* May not start with +. */
    strcpy(buf,"+1");
    assert(string2l(buf,strlen(buf),&v) == 0);

    /* May not start with 0. */
    strcpy(buf,"01");
    assert(string2l(buf,strlen(buf),&v) == 0);

    strcpy(buf,"-1");
    assert(string2l(buf,strlen(buf),&v) == 1);
    assert(v == -1);

    strcpy(buf,"0");
    assert(string2l(buf,strlen(buf),&v) == 1);
    assert(v == 0);

    strcpy(buf,"1");
    assert(string2l(buf,strlen(buf),&v) == 1);
    assert(v == 1);

    strcpy(buf,"99");
    assert(string2l(buf,strlen(buf),&v) == 1);
    assert(v == 99);

    strcpy(buf,"-99");
    assert(string2l(buf,strlen(buf),&v) == 1);
    assert(v == -99);

#if LONG_MAX != LLONG_MAX
    strcpy(buf,"-2147483648");
    assert(string2l(buf,strlen(buf),&v) == 1);
    assert(v == LONG_MIN);

    strcpy(buf,"-2147483649"); /* overflow */
    assert(string2l(buf,strlen(buf),&v) == 0);

    strcpy(buf,"2147483647");
    assert(string2l(buf,strlen(buf),&v) == 1);
    assert(v == LONG_MAX);

    strcpy(buf,"2147483648"); /* overflow */
    assert(string2l(buf,strlen(buf),&v) == 0);
#endif
}

int main(int argc, char **argv) {
    test_string2ll();
    test_string2l();
    return 0;
}
#endif
Commit	Line	Data
	1	#include "fmacros.h"
	2	#include <stdlib.h>
	3	#include <stdio.h>
	4	#include <string.h>
	5	#include <ctype.h>
	6	#include <limits.h>
	7	#include <math.h>
	8
	9	#include "util.h"
	10
	11	/* Glob-style pattern matching. */
	12	int stringmatchlen(const char *pattern, int patternLen,
	13	const char *string, int stringLen, int nocase)
	14	{
	15	while(patternLen) {
	16	switch(pattern[0]) {
	17	case '*':
	18	while (pattern[1] == '*') {
	19	pattern++;
	20	patternLen--;
	21	}
	22	if (patternLen == 1)
	23	return 1; /* match */
	24	while(stringLen) {
	25	if (stringmatchlen(pattern+1, patternLen-1,
	26	string, stringLen, nocase))
	27	return 1; /* match */
	28	string++;
	29	stringLen--;
	30	}
	31	return 0; /* no match */
	32	break;
	33	case '?':
	34	if (stringLen == 0)
	35	return 0; /* no match */
	36	string++;
	37	stringLen--;
	38	break;
	39	case '[':
	40	{
	41	int not, match;
	42
	43	pattern++;
	44	patternLen--;
	45	not = pattern[0] == '^';
	46	if (not) {
	47	pattern++;
	48	patternLen--;
	49	}
	50	match = 0;
	51	while(1) {
	52	if (pattern[0] == '\\') {
	53	pattern++;
	54	patternLen--;
	55	if (pattern[0] == string[0])
	56	match = 1;
	57	} else if (pattern[0] == ']') {
	58	break;
	59	} else if (patternLen == 0) {
	60	pattern--;
	61	patternLen++;
	62	break;
	63	} else if (pattern[1] == '-' && patternLen >= 3) {
	64	int start = pattern[0];
	65	int end = pattern[2];
	66	int c = string[0];
	67	if (start > end) {
	68	int t = start;
	69	start = end;
	70	end = t;
	71	}
	72	if (nocase) {
	73	start = tolower(start);
	74	end = tolower(end);
	75	c = tolower(c);
	76	}
	77	pattern += 2;
	78	patternLen -= 2;
	79	if (c >= start && c <= end)
	80	match = 1;
	81	} else {
	82	if (!nocase) {
	83	if (pattern[0] == string[0])
	84	match = 1;
	85	} else {
	86	if (tolower((int)pattern[0]) == tolower((int)string[0]))
	87	match = 1;
	88	}
	89	}
	90	pattern++;
	91	patternLen--;
	92	}
	93	if (not)
	94	match = !match;
	95	if (!match)
	96	return 0; /* no match */
	97	string++;
	98	stringLen--;
	99	break;
	100	}
	101	case '\\':
	102	if (patternLen >= 2) {
	103	pattern++;
	104	patternLen--;
	105	}
	106	/* fall through */
	107	default:
	108	if (!nocase) {
	109	if (pattern[0] != string[0])
	110	return 0; /* no match */
	111	} else {
	112	if (tolower((int)pattern[0]) != tolower((int)string[0]))
	113	return 0; /* no match */
	114	}
	115	string++;
	116	stringLen--;
	117	break;
	118	}
	119	pattern++;
	120	patternLen--;
	121	if (stringLen == 0) {
	122	while(pattern == '') {
	123	pattern++;
	124	patternLen--;
	125	}
	126	break;
	127	}
	128	}
	129	if (patternLen == 0 && stringLen == 0)
	130	return 1;
	131	return 0;
	132	}
	133
	134	int stringmatch(const char pattern, const char string, int nocase) {
	135	return stringmatchlen(pattern,strlen(pattern),string,strlen(string),nocase);
	136	}
	137
	138	/* Convert a string representing an amount of memory into the number of
	139	* bytes, so for instance memtoll("1Gi") will return 1073741824 that is
	140	* (102410241024).
	141	*
	142	* On parsing error, if *err is not NULL, it's set to 1, otherwise it's
	143	* set to 0 */
	144	long long memtoll(const char p, int err) {
	145	const char *u;
	146	char buf[128];
	147	long mul; /* unit multiplier */
	148	long long val;
	149	unsigned int digits;
	150
	151	if (err) *err = 0;
	152	/* Search the first non digit character. */
	153	u = p;
	154	if (*u == '-') u++;
	155	while(u && isdigit(u)) u++;
	156	if (*u == '\0' \|\| !strcasecmp(u,"b")) {
	157	mul = 1;
	158	} else if (!strcasecmp(u,"k")) {
	159	mul = 1000;
	160	} else if (!strcasecmp(u,"kb")) {
	161	mul = 1024;
	162	} else if (!strcasecmp(u,"m")) {
	163	mul = 1000*1000;
	164	} else if (!strcasecmp(u,"mb")) {
	165	mul = 1024*1024;
	166	} else if (!strcasecmp(u,"g")) {
	167	mul = 1000L10001000;
	168	} else if (!strcasecmp(u,"gb")) {
	169	mul = 1024L10241024;
	170	} else {
	171	if (err) *err = 1;
	172	mul = 1;
	173	}
	174	digits = u-p;
	175	if (digits >= sizeof(buf)) {
	176	if (err) *err = 1;
	177	return LLONG_MAX;
	178	}
	179	memcpy(buf,p,digits);
	180	buf[digits] = '\0';
	181	val = strtoll(buf,NULL,10);
	182	return val*mul;
	183	}
	184
	185	/* Convert a long long into a string. Returns the number of
	186	* characters needed to represent the number, that can be shorter if passed
	187	* buffer length is not enough to store the whole number. */
	188	int ll2string(char *s, size_t len, long long value) {
	189	char buf[32], *p;
	190	unsigned long long v;
	191	size_t l;
	192
	193	if (len == 0) return 0;
	194	v = (value < 0) ? -value : value;
	195	p = buf+31; /* point to the last character */
	196	do {
	197	*p-- = '0'+(v%10);
	198	v /= 10;
	199	} while(v);
	200	if (value < 0) *p-- = '-';
	201	p++;
	202	l = 32-(p-buf);
	203	if (l+1 > len) l = len-1; /* Make sure it fits, including the nul term */
	204	memcpy(s,p,l);
	205	s[l] = '\0';
	206	return l;
	207	}
	208
	209	/* Convert a string into a long long. Returns 1 if the string could be parsed
	210	* into a (non-overflowing) long long, 0 otherwise. The value will be set to
	211	* the parsed value when appropriate. */
	212	int string2ll(char s, size_t slen, long long value) {
	213	char *p = s;
	214	size_t plen = 0;
	215	int negative = 0;
	216	unsigned long long v;
	217
	218	if (plen == slen)
	219	return 0;
	220
	221	/* Special case: first and only digit is 0. */
	222	if (slen == 1 && p[0] == '0') {
	223	if (value != NULL) *value = 0;
	224	return 1;
	225	}
	226
	227	if (p[0] == '-') {
	228	negative = 1;
	229	p++; plen++;
	230
	231	/* Abort on only a negative sign. */
	232	if (plen == slen)
	233	return 0;
	234	}
	235
	236	/* First digit should be 1-9, otherwise the string should just be 0. */
	237	if (p[0] >= '1' && p[0] <= '9') {
	238	v = p[0]-'0';
	239	p++; plen++;
	240	} else if (p[0] == '0' && slen == 1) {
	241	*value = 0;
	242	return 1;
	243	} else {
	244	return 0;
	245	}
	246
	247	while (plen < slen && p[0] >= '0' && p[0] <= '9') {
	248	if (v > (ULLONG_MAX / 10)) /* Overflow. */
	249	return 0;
	250	v *= 10;
	251
	252	if (v > (ULLONG_MAX - (p[0]-'0'))) /* Overflow. */
	253	return 0;
	254	v += p[0]-'0';
	255
	256	p++; plen++;
	257	}
	258
	259	/* Return if not all bytes were used. */
	260	if (plen < slen)
	261	return 0;
	262
	263	if (negative) {
	264	if (v > ((unsigned long long)(-(LLONG_MIN+1))+1)) /* Overflow. */
	265	return 0;
	266	if (value != NULL) *value = -v;
	267	} else {
	268	if (v > LLONG_MAX) /* Overflow. */
	269	return 0;
	270	if (value != NULL) *value = v;
	271	}
	272	return 1;
	273	}
	274
	275	/* Convert a string into a long. Returns 1 if the string could be parsed into a
	276	* (non-overflowing) long, 0 otherwise. The value will be set to the parsed
	277	* value when appropriate. */
	278	int string2l(char s, size_t slen, long lval) {
	279	long long llval;
	280
	281	if (!string2ll(s,slen,&llval))
	282	return 0;
	283
	284	if (llval < LONG_MIN \|\| llval > LONG_MAX)
	285	return 0;
	286
	287	*lval = (long)llval;
	288	return 1;
	289	}
	290
	291	/* Convert a double to a string representation. Returns the number of bytes
	292	* required. The representation should always be parsable by stdtod(3). */
	293	int d2string(char *buf, size_t len, double value) {
	294	if (isnan(value)) {
	295	len = snprintf(buf,len,"nan");
	296	} else if (isinf(value)) {
	297	if (value < 0)
	298	len = snprintf(buf,len,"-inf");
	299	else
	300	len = snprintf(buf,len,"inf");
	301	} else if (value == 0) {
	302	/* See: http://en.wikipedia.org/wiki/Signed_zero, "Comparisons". */
	303	if (1.0/value < 0)
	304	len = snprintf(buf,len,"-0");
	305	else
	306	len = snprintf(buf,len,"0");
	307	} else {
	308	#if (DBL_MANT_DIG >= 52) && (LLONG_MAX == 0x7fffffffffffffffLL)
	309	/* Check if the float is in a safe range to be casted into a
	310	* long long. We are assuming that long long is 64 bit here.
	311	* Also we are assuming that there are no implementations around where
	312	* double has precision < 52 bit.
	313	*
	314	* Under this assumptions we test if a double is inside an interval
	315	* where casting to long long is safe. Then using two castings we
	316	* make sure the decimal part is zero. If all this is true we use
	317	* integer printing function that is much faster. */
	318	double min = -4503599627370495; /* (2^52)-1 */
	319	double max = 4503599627370496; /* -(2^52) */
	320	if (val > min && val < max && value == ((double)((long long)value)))
	321	len = ll2string(buf,len,(long long)value);
	322	else
	323	#endif
	324	len = snprintf(buf,len,"%.17g",value);
	325	}
	326
	327	return len;
	328	}
	329
	330	#ifdef UTIL_TEST_MAIN
	331	#include <assert.h>
	332
	333	void test_string2ll(void) {
	334	char buf[32];
	335	long long v;
	336
	337	/* May not start with +. */
	338	strcpy(buf,"+1");
	339	assert(string2ll(buf,strlen(buf),&v) == 0);
	340
	341	/* Leading space. */
	342	strcpy(buf," 1");
	343	assert(string2ll(buf,strlen(buf),&v) == 0);
	344
	345	/* Trailing space. */
	346	strcpy(buf,"1 ");
	347	assert(string2ll(buf,strlen(buf),&v) == 0);
	348
	349	/* May not start with 0. */
	350	strcpy(buf,"01");
	351	assert(string2ll(buf,strlen(buf),&v) == 0);
	352
	353	strcpy(buf,"-1");
	354	assert(string2ll(buf,strlen(buf),&v) == 1);
	355	assert(v == -1);
	356
	357	strcpy(buf,"0");
	358	assert(string2ll(buf,strlen(buf),&v) == 1);
	359	assert(v == 0);
	360
	361	strcpy(buf,"1");
	362	assert(string2ll(buf,strlen(buf),&v) == 1);
	363	assert(v == 1);
	364
	365	strcpy(buf,"99");
	366	assert(string2ll(buf,strlen(buf),&v) == 1);
	367	assert(v == 99);
	368
	369	strcpy(buf,"-99");
	370	assert(string2ll(buf,strlen(buf),&v) == 1);
	371	assert(v == -99);
	372
	373	strcpy(buf,"-9223372036854775808");
	374	assert(string2ll(buf,strlen(buf),&v) == 1);
	375	assert(v == LLONG_MIN);
	376
	377	strcpy(buf,"-9223372036854775809"); /* overflow */
	378	assert(string2ll(buf,strlen(buf),&v) == 0);
	379
	380	strcpy(buf,"9223372036854775807");
	381	assert(string2ll(buf,strlen(buf),&v) == 1);
	382	assert(v == LLONG_MAX);
	383
	384	strcpy(buf,"9223372036854775808"); /* overflow */
	385	assert(string2ll(buf,strlen(buf),&v) == 0);
	386	}
	387
	388	void test_string2l(void) {
	389	char buf[32];
	390	long v;
	391
	392	/* May not start with +. */
	393	strcpy(buf,"+1");
	394	assert(string2l(buf,strlen(buf),&v) == 0);
	395
	396	/* May not start with 0. */
	397	strcpy(buf,"01");
	398	assert(string2l(buf,strlen(buf),&v) == 0);
	399
	400	strcpy(buf,"-1");
	401	assert(string2l(buf,strlen(buf),&v) == 1);
	402	assert(v == -1);
	403
	404	strcpy(buf,"0");
	405	assert(string2l(buf,strlen(buf),&v) == 1);
	406	assert(v == 0);
	407
	408	strcpy(buf,"1");
	409	assert(string2l(buf,strlen(buf),&v) == 1);
	410	assert(v == 1);
	411
	412	strcpy(buf,"99");
	413	assert(string2l(buf,strlen(buf),&v) == 1);
	414	assert(v == 99);
	415
	416	strcpy(buf,"-99");
	417	assert(string2l(buf,strlen(buf),&v) == 1);
	418	assert(v == -99);
	419
	420	#if LONG_MAX != LLONG_MAX
	421	strcpy(buf,"-2147483648");
	422	assert(string2l(buf,strlen(buf),&v) == 1);
	423	assert(v == LONG_MIN);
	424
	425	strcpy(buf,"-2147483649"); /* overflow */
	426	assert(string2l(buf,strlen(buf),&v) == 0);
	427
	428	strcpy(buf,"2147483647");
	429	assert(string2l(buf,strlen(buf),&v) == 1);
	430	assert(v == LONG_MAX);
	431
	432	strcpy(buf,"2147483648"); /* overflow */
	433	assert(string2l(buf,strlen(buf),&v) == 0);
	434	#endif
	435	}
	436
	437	int main(int argc, char **argv) {
	438	test_string2ll();
	439	test_string2l();
	440	return 0;
	441	}
	442	#endif