MIRROR: javascript for 🐜's, a tiny runtime with big ambitions
add support for fractional and exponential parts in decimal parsing
+23
-11
+1
-1
meson.build
+1
-1
meson.build
···
96
96
build_date = run_command('date', '+%Y-%m-%d', check: true).stdout().strip()
97
97
98
98
version_conf = configuration_data()
99
-
version_conf.set('ANT_VERSION', '0.3.2.19')
99
+
version_conf.set('ANT_VERSION', '0.3.2.20')
100
100
version_conf.set('ANT_GIT_HASH', git_hash)
101
101
version_conf.set('ANT_BUILD_DATE', build_date)
102
102
+22
-10
src/ant.c
+22
-10
src/ant.c
···
3656
3656
};
3657
3657
3658
3658
static inline jsoff_t parse_decimal(const char *buf, jsoff_t maxlen, double *out) {
3659
-
double val = 0.0;
3659
+
uint64_t int_part = 0, frac_part = 0;
3660
+
int frac_digits = 0;
3660
3661
jsoff_t i = 0;
3661
3662
3662
3663
while (i < maxlen && (IS_DIGIT(buf[i]) || buf[i] == '_')) {
3663
-
if (buf[i] != '_') val = val * 10.0 + (buf[i] - '0');
3664
+
if (buf[i] != '_') int_part = int_part * 10 + (buf[i] - '0');
3664
3665
i++;
3665
3666
}
3666
3667
3667
3668
if (i < maxlen && buf[i] == '.') {
3668
3669
i++;
3669
-
double frac = 0.1;
3670
3670
while (i < maxlen && (IS_DIGIT(buf[i]) || buf[i] == '_')) {
3671
-
if (buf[i] != '_') { val += (buf[i] - '0') * frac; frac *= 0.1; }
3671
+
if (buf[i] != '_') { frac_part = frac_part * 10 + (buf[i] - '0'); frac_digits++; }
3672
3672
i++;
3673
3673
}
3674
3674
}
3675
3675
3676
+
static const double neg_pow10[] = {
3677
+
1e0,1e-1,1e-2,1e-3,1e-4,1e-5,1e-6,1e-7,1e-8,1e-9,1e-10,
3678
+
1e-11,1e-12,1e-13,1e-14,1e-15,1e-16,1e-17,1e-18,1e-19,1e-20
3679
+
};
3680
+
3681
+
static const double pos_pow10[] = {
3682
+
1e0,1e1,1e2,1e3,1e4,1e5,1e6,1e7,1e8,1e9,1e10,
3683
+
1e11,1e12,1e13,1e14,1e15,1e16,1e17,1e18,1e19,1e20
3684
+
};
3685
+
3686
+
double val = (double)int_part;
3687
+
if (frac_digits > 0) {
3688
+
val += (frac_digits <= 20)
3689
+
? (double)frac_part * neg_pow10[frac_digits]
3690
+
: (double)frac_part * pow(10.0, -frac_digits);
3691
+
}
3692
+
3676
3693
if (i < maxlen && (buf[i] == 'e' || buf[i] == 'E')) {
3677
3694
i++;
3678
3695
int exp_sign = 1, exp_val = 0;
···
3684
3701
if (buf[i] != '_') exp_val = exp_val * 10 + (buf[i] - '0');
3685
3702
i++;
3686
3703
}
3687
-
static const double pow10[] = {
3688
-
1e0,1e1,1e2,1e3,1e4,1e5,1e6,1e7,1e8,1e9,1e10,
3689
-
1e11,1e12,1e13,1e14,1e15,1e16,1e17,1e18,1e19,1e20
3690
-
};
3691
-
3692
3704
if (exp_val <= 20) {
3693
-
val = (exp_sign > 0) ? val * pow10[exp_val] : val / pow10[exp_val];
3705
+
val = (exp_sign > 0) ? val * pos_pow10[exp_val] : val * neg_pow10[exp_val];
3694
3706
} else val *= pow(10.0, exp_sign * exp_val);
3695
3707
}
3696
3708