/**
* Convert a "natural" string representation of a size value to uint64_t.
*
* E.g. a value of "3k" or "3 K" would be converted to 3000, a value
* of "15M" would be converted to 15000000.
*
* Value representations other than decimal (such as hex or octal) are not
* supported. Only 'k' (kilo), 'm' (mega), 'g' (giga) suffixes are supported.
* Spaces (but not other whitespace) between value and suffix are allowed.
*
* @param sizestring A string containing a (decimal) size value.
* @param size Pointer to uint64_t which will contain the string's size value.
*
* @return SR_OK upon success, SR_ERR upon errors.
*
* @since 0.1.0
*/
SR_API int sr_parse_sizestring(const char *sizestring, uint64_t *size)
{
uint64_t multiplier;
int done;
double frac_part;
char *s;
*size = strtoull(sizestring, &s, 10);
multiplier = 0;
frac_part = 0;
done = FALSE;
while (s && *s && multiplier == 0 && !done) {
switch (*s) {
case ' ':
break;
case '.':
frac_part = g_ascii_strtod(s, &s);
break;
case 'k':
case 'K':
multiplier = SR_KHZ(1);
break;
case 'm':
case 'M':
multiplier = SR_MHZ(1);
break;
case 'g':
case 'G':
multiplier = SR_GHZ(1);
break;
case 't':
case 'T':
multiplier = SR_GHZ(1000);
break;
case 'p':
case 'P':
multiplier = SR_GHZ(1000 * 1000);
break;
case 'e':
case 'E':
multiplier = SR_GHZ(1000 * 1000 * 1000);
break;
default:
done = TRUE;
s--;
}
s++;
}
if (multiplier > 0) {
*size *= multiplier;
*size += frac_part * multiplier;
} else {
*size += frac_part;
}
if (s && *s && g_ascii_strcasecmp(s, "Hz"))
return SR_ERR;
return SR_OK;
}
/**
* Convert a numeric value value to its "natural" string representation
* in SI units.
*
* E.g. a value of 3000000, with units set to "W", would be converted
* to "3 MW", 20000 to "20 kW", 31500 would become "31.5 kW".
*
* @param x The value to convert.
* @param unit The unit to append to the string, or NULL if the string
* has no units.
*
* @return A newly allocated string representation of the samplerate value,
* or NULL upon errors. The caller is responsible to g_free() the
* memory.
*
* @since 0.2.0
*/
SR_API char *sr_si_string_u64(uint64_t x, const char *unit)
{
uint8_t i;
uint64_t quot, divisor[] = {
SR_HZ(1), SR_KHZ(1), SR_MHZ(1), SR_GHZ(1),
SR_GHZ(1000), SR_GHZ(1000 * 1000), SR_GHZ(1000 * 1000 * 1000),
};
const char *p, prefix[] = "\0kMGTPE";
char fmt[16], fract[20] = "", *f;
if (!unit)
unit = "";
for (i = 0; (quot = x / divisor[i]) >= 1000; i++);
if (i) {
sprintf(fmt, ".%%0%d"PRIu64, i * 3);
f = fract + sprintf(fract, fmt, x % divisor[i]) - 1;
while (f >= fract && strchr("0.", *f))
*f-- = 0;
}
p = prefix + i;
return g_strdup_printf("%" PRIu64 "%s %.1s%s", quot, fract, p, unit);
}
/**
* Convert a numeric frequency value to the "natural" string representation
* of its period.
*
* E.g. a value of 3000000 would be converted to "3 us", 20000 to "50 ms".
*
* @param frequency The frequency in Hz.
*
* @return A newly allocated string representation of the frequency value,
* or NULL upon errors. The caller is responsible to g_free() the
* memory.
*
* @since 0.1.0
*/
SR_API char *sr_period_string(uint64_t frequency)
{
char *o;
int r;
/* Allocate enough for a uint64_t as string + " ms". */
o = g_malloc0(30 + 1);
if (frequency >= SR_GHZ(1))
r = snprintf(o, 30, "%" PRIu64 " ns", frequency / 1000000000);
else if (frequency >= SR_MHZ(1))
r = snprintf(o, 30, "%" PRIu64 " us", frequency / 1000000);
else if (frequency >= SR_KHZ(1))
r = snprintf(o, 30, "%" PRIu64 " ms", frequency / 1000);
else
r = snprintf(o, 30, "%" PRIu64 " s", frequency);
if (r < 0) {
/* Something went wrong... */
g_free(o);
return NULL;
}
return o;
}
/**
* Convert a numeric period value to the "natural" string representation
* of its period value.
*
* The period is specified as a rational number's numerator and denominator.
*
* E.g. a pair of (1, 5) would be converted to "200 ms", (10, 100) to "100 ms".
*
* @param v_p The period numerator.
* @param v_q The period denominator.
*
* @return A newly allocated string representation of the period value,
* or NULL upon errors. The caller is responsible to g_free() the
* memory.
*
* @since 0.5.0
*/
SR_API char *sr_period_string(uint64_t v_p, uint64_t v_q)
{
double freq, v;
int prec;
freq = 1 / ((double)v_p / v_q);
if (freq > SR_GHZ(1)) {
v = (double)v_p / v_q * 1000000000000.0;
prec = ((v - (uint64_t)v) < FLT_MIN) ? 0 : 3;
return g_strdup_printf("%.*f ps", prec, v);
} else if (freq > SR_MHZ(1)) {
v = (double)v_p / v_q * 1000000000.0;
prec = ((v - (uint64_t)v) < FLT_MIN) ? 0 : 3;
return g_strdup_printf("%.*f ns", prec, v);
} else if (freq > SR_KHZ(1)) {
v = (double)v_p / v_q * 1000000.0;
prec = ((v - (uint64_t)v) < FLT_MIN) ? 0 : 3;
return g_strdup_printf("%.*f us", prec, v);
} else if (freq > 1) {
v = (double)v_p / v_q * 1000.0;
prec = ((v - (uint64_t)v) < FLT_MIN) ? 0 : 3;
return g_strdup_printf("%.*f ms", prec, v);
} else {
v = (double)v_p / v_q;
prec = ((v - (uint64_t)v) < FLT_MIN) ? 0 : 3;
return g_strdup_printf("%.*f s", prec, v);
}
}
/**
* Convert a numeric value value to its "natural" string representation.
* in SI units
*
* E.g. a value of 3000000, with units set to "W", would be converted
* to "3 MW", 20000 to "20 kW", 31500 would become "31.5 kW".
*
* @param x The value to convert.
* @param unit The unit to append to the string, or NULL if the string
* has no units.
*
* @return A g_try_malloc()ed string representation of the samplerate value,
* or NULL upon errors. The caller is responsible to g_free() the
* memory.
*/
SR_API char *sr_si_string_u64(uint64_t x, const char *unit)
{
if (unit == NULL)
unit = "";
if ((x >= SR_GHZ(1)) && (x % SR_GHZ(1) == 0)) {
return g_strdup_printf("%" PRIu64 " G%s", x / SR_GHZ(1), unit);
} else if ((x >= SR_GHZ(1)) && (x % SR_GHZ(1) != 0)) {
return g_strdup_printf("%" PRIu64 ".%" PRIu64 " G%s",
x / SR_GHZ(1), x % SR_GHZ(1), unit);
} else if ((x >= SR_MHZ(1)) && (x % SR_MHZ(1) == 0)) {
return g_strdup_printf("%" PRIu64 " M%s",
x / SR_MHZ(1), unit);
} else if ((x >= SR_MHZ(1)) && (x % SR_MHZ(1) != 0)) {
return g_strdup_printf("%" PRIu64 ".%" PRIu64 " M%s",
x / SR_MHZ(1), x % SR_MHZ(1), unit);
} else if ((x >= SR_KHZ(1)) && (x % SR_KHZ(1) == 0)) {
return g_strdup_printf("%" PRIu64 " k%s",
x / SR_KHZ(1), unit);
} else if ((x >= SR_KHZ(1)) && (x % SR_KHZ(1) != 0)) {
return g_strdup_printf("%" PRIu64 ".%" PRIu64 " K%s",
x / SR_KHZ(1), x % SR_KHZ(1), unit);
} else {
return g_strdup_printf("%" PRIu64 " %s", x, unit);
}
sr_err("%s: Error creating SI units string.", __func__);
return NULL;
}
/**
* Convert a "natural" string representation of a size value to uint64_t.
*
* E.g. a value of "3k" or "3 K" would be converted to 3000, a value
* of "15M" would be converted to 15000000.
*
* Value representations other than decimal (such as hex or octal) are not
* supported. Only 'k' (kilo), 'm' (mega), 'g' (giga) suffixes are supported.
* Spaces (but not other whitespace) between value and suffix are allowed.
*
* @param sizestring A string containing a (decimal) size value.
* @param size Pointer to uint64_t which will contain the string's size value.
*
* @return SR_OK upon success, SR_ERR upon errors.
*/
SR_API int sr_parse_sizestring(const char *sizestring, uint64_t *size)
{
int multiplier, done;
char *s;
*size = strtoull(sizestring, &s, 10);
multiplier = 0;
done = FALSE;
while (s && *s && multiplier == 0 && !done) {
switch (*s) {
case ' ':
break;
case 'k':
case 'K':
multiplier = SR_KHZ(1);
break;
case 'm':
case 'M':
multiplier = SR_MHZ(1);
break;
case 'g':
case 'G':
multiplier = SR_GHZ(1);
break;
default:
done = TRUE;
s--;
}
s++;
}
if (multiplier > 0)
*size *= multiplier;
if (*s && strcasecmp(s, "Hz"))
return SR_ERR;
return SR_OK;
}
static const int devopts[] = {
SR_CONF_LOGIC_ANALYZER,
SR_CONF_DEMO_DEV,
SR_CONF_SAMPLERATE,
SR_CONF_LIMIT_SAMPLES,
SR_CONF_LIMIT_MSEC,
};
static const int devopts_cg[] = {
SR_CONF_PATTERN_MODE,
};
static const uint64_t samplerates[] = {
SR_HZ(1),
SR_GHZ(1),
SR_HZ(1),
};
static uint8_t pattern_sigrok[] = {
0x4c, 0x92, 0x92, 0x92, 0x64, 0x00, 0x00, 0x00,
0x82, 0xfe, 0xfe, 0x82, 0x00, 0x00, 0x00, 0x00,
0x7c, 0x82, 0x82, 0x92, 0x74, 0x00, 0x00, 0x00,
0xfe, 0x12, 0x12, 0x32, 0xcc, 0x00, 0x00, 0x00,
0x7c, 0x82, 0x82, 0x82, 0x7c, 0x00, 0x00, 0x00,
0xfe, 0x10, 0x28, 0x44, 0x82, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0xbe, 0xbe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
SR_PRIV struct sr_dev_driver demo_driver_info;
END_TEST
START_TEST(test_ghz)
{
/* Note: Numbers > 2^32 need a ULL suffix. */
test_samplerate(1000000000, "1 GHz");
test_samplerate(5000000000ULL, "5 GHz");
test_samplerate(72000000000ULL, "72 GHz");
test_samplerate(388000000000ULL, "388 GHz");
test_samplerate(4417594444ULL, "4.417594444 GHz");
test_samplerate(44175944444ULL, "44.175944444 GHz");
test_samplerate(441759444441ULL, "441.759444441 GHz");
test_samplerate(441759000001ULL, "441.759000001 GHz");
test_samplerate(441050000000ULL, "441.05 GHz");
test_samplerate(441000000005ULL, "441.000000005 GHz");
test_samplerate(441500000000ULL, "441.5 GHz");
/* Again, but now using SR_GHZ(). */
test_samplerate(SR_GHZ(1), "1 GHz");
test_samplerate(SR_GHZ(5), "5 GHz");
test_samplerate(SR_GHZ(72), "72 GHz");
test_samplerate(SR_GHZ(388), "388 GHz");
test_samplerate(SR_GHZ(4.417594444), "4.417594444 GHz");
test_samplerate(SR_GHZ(44.175944444), "44.175944444 GHz");
test_samplerate(SR_GHZ(441.759444441), "441.759444441 GHz");
test_samplerate(SR_GHZ(441.759000001), "441.759000001 GHz");
test_samplerate(SR_GHZ(441.050000000), "441.05 GHz");
test_samplerate(SR_GHZ(441.000000005), "441.000000005 GHz");
test_samplerate(SR_GHZ(441.500000000), "441.5 GHz");
/* Now check the biggest-possible samplerate (2^64 Hz). */
// test_samplerate(18446744073709551615ULL, "18446744073.709551615 GHz");
// test_samplerate(SR_GHZ(18446744073ULL), "18446744073 GHz");
}
