JavaScript-QuickJS
view release on metacpan or search on metacpan
easyxs/ppport.h view on Meta::CPAN
s++; if (s == send || (*s != 'F' && *s != 'f')) return 0;
s++; if (s < send && (*s == 'I' || *s == 'i')) {
s++; if (s == send || (*s != 'N' && *s != 'n')) return 0;
s++; if (s == send || (*s != 'I' && *s != 'i')) return 0;
s++; if (s == send || (*s != 'T' && *s != 't')) return 0;
s++; if (s == send || (*s != 'Y' && *s != 'y')) return 0;
s++;
}
sawinf = 1;
} else if (*s == 'N' || *s == 'n') {
/* XXX TODO: There are signaling NaNs and quiet NaNs. */
s++; if (s == send || (*s != 'A' && *s != 'a')) return 0;
s++; if (s == send || (*s != 'N' && *s != 'n')) return 0;
s++;
sawnan = 1;
} else
return 0;
if (sawinf) {
numtype &= IS_NUMBER_NEG; /* Keep track of sign */
numtype |= IS_NUMBER_INFINITY | IS_NUMBER_NOT_INT;
quickjs/doc/jsbignum.texi view on Meta::CPAN
@end table
@chapter BigFloat
@section Introduction
This extension adds the @code{BigFloat} primitive type. The
@code{BigFloat} type represents floating point numbers in base 2
with the IEEE 754 semantics. A floating
point number is represented as a sign, mantissa and exponent. The
special values @code{NaN}, @code{+/-Infinity}, @code{+0} and @code{-0}
are supported. The mantissa and exponent can have any bit length with
an implementation specific minimum and maximum.
@section Floating point rounding
Each floating point operation operates with infinite precision and
then rounds the result according to the specified floating point
environment (@code{BigFloatEnv} object). The status flags of the
environment are also set according to the result of the operation.
quickjs/doc/jsbignum.texi view on Meta::CPAN
@item parseFloat(a[, radix[, e]])
Parse the string @code{a} as a floating point number in radix
@code{radix}. The radix is 0 (default) or from 2 to 36. The radix 0
means radix 10 unless there is a hexadecimal or binary prefix. The
result is rounded according to the floating point environment @code{e}
or the global environment if @code{e} is undefined.
@item isFinite(a)
Return true if @code{a} is a finite bigfloat.
@item isNaN(a)
Return true if @code{a} is a NaN bigfloat.
@item add(a, b[, e])
@item sub(a, b[, e])
@item mul(a, b[, e])
@item div(a, b[, e])
Perform the specified floating point operation and round the floating
point number @code{a} according to the floating point environment
@code{e} or the global environment if @code{e} is undefined. If
@code{e} is specified, the floating point status flags are updated.
quickjs/doc/jsbignum.texi view on Meta::CPAN
@chapter BigDecimal
This extension adds the @code{BigDecimal} primitive type. The
@code{BigDecimal} type represents floating point numbers in base
10. It is inspired from the proposal available at
@url{https://github.com/littledan/proposal-bigdecimal}.
The @code{BigDecimal} floating point numbers are always normalized and
finite. There is no concept of @code{-0}, @code{Infinity} or
@code{NaN}. By default, all the computations are done with infinite
precision.
@section Operators
The following builtin operators support BigDecimal:
@table @code
@item +
@item -
quickjs/doc/quickjs.texi view on Meta::CPAN
Reference counting is used to free objects automatically and
deterministically. A separate cycle removal pass is done when the allocated
memory becomes too large. The cycle removal algorithm only uses the
reference counts and the object content, so no explicit garbage
collection roots need to be manipulated in the C code.
@subsection JSValue
It is a Javascript value which can be a primitive type (such as
Number, String, ...) or an Object. NaN boxing is used in the 32-bit version
to store 64-bit floating point numbers. The representation is
optimized so that 32-bit integers and reference counted values can be
efficiently tested.
In 64-bit code, JSValue are 128-bit large and no NaN boxing is used. The
rationale is that in 64-bit code memory usage is less critical.
In both cases (32 or 64 bits), JSValue exactly fits two CPU registers,
so it can be efficiently returned by C functions.
@subsection Function call
The engine is optimized so that function calls are fast. The system
stack holds the Javascript parameters and local variables.
quickjs/libbf.c view on Meta::CPAN
printf("\n");
}
/* for debugging */
void bf_print_str(const char *str, const bf_t *a)
{
slimb_t i;
printf("%s=", str);
if (a->expn == BF_EXP_NAN) {
printf("NaN");
} else {
if (a->sign)
putchar('-');
if (a->expn == BF_EXP_ZERO) {
putchar('0');
} else if (a->expn == BF_EXP_INF) {
printf("Inf");
} else {
printf("0x0.");
for(i = a->len - 1; i >= 0; i--)
quickjs/libbf.c view on Meta::CPAN
if (v1 != v2) {
if (v1 < v2)
return -1;
else
return 1;
}
}
return 0;
}
/* Full order: -0 < 0, NaN == NaN and NaN is larger than all other numbers */
int bf_cmp_full(const bf_t *a, const bf_t *b)
{
int res;
if (a->expn == BF_EXP_NAN || b->expn == BF_EXP_NAN) {
if (a->expn == b->expn)
res = 0;
else if (a->expn == BF_EXP_NAN)
res = 1;
else
quickjs/libbf.c view on Meta::CPAN
res = 1 - 2 * a->sign;
} else {
res = bf_cmpu(a, b);
if (a->sign)
res = -res;
}
return res;
}
/* Standard floating point comparison: return 2 if one of the operands
is NaN (unordered) or -1, 0, 1 depending on the ordering assuming
-0 == +0 */
int bf_cmp(const bf_t *a, const bf_t *b)
{
int res;
if (a->expn == BF_EXP_NAN || b->expn == BF_EXP_NAN) {
res = 2;
} else if (a->sign != b->sign) {
if (a->expn == BF_EXP_ZERO && b->expn == BF_EXP_ZERO)
res = 0;
quickjs/libbf.c view on Meta::CPAN
}
/* abs(a) >= abs(b) */
if (cmp_res == 0 && is_sub && a->expn < BF_EXP_INF) {
/* zero result */
bf_set_zero(r, (flags & BF_RND_MASK) == BF_RNDD);
ret = 0;
} else if (a->len == 0 || b->len == 0) {
ret = 0;
if (a->expn >= BF_EXP_INF) {
if (a->expn == BF_EXP_NAN) {
/* at least one operand is NaN */
bf_set_nan(r);
} else if (b->expn == BF_EXP_INF && is_sub) {
/* infinities with different signs */
bf_set_nan(r);
ret = BF_ST_INVALID_OP;
} else {
bf_set_inf(r, a_sign);
}
} else {
/* at least one zero and not subtract */
quickjs/libbf.c view on Meta::CPAN
limb_t prec, bf_flags_t flags, BOOL is_dec)
{
bf_context_t *ctx = a2->ctx;
DynBuf s_s, *s = &s_s;
int radix_bits;
// bf_print_str("ftoa", a2);
// printf("radix=%d\n", radix);
dbuf_init2(s, ctx, bf_dbuf_realloc);
if (a2->expn == BF_EXP_NAN) {
dbuf_putstr(s, "NaN");
} else {
if (a2->sign)
dbuf_putc(s, '-');
if (a2->expn == BF_EXP_INF) {
if (flags & BF_FTOA_JS_QUIRKS)
dbuf_putstr(s, "Infinity");
else
dbuf_putstr(s, "Inf");
} else {
int fmt, ret;
quickjs/libbf.c view on Meta::CPAN
bf_set_nan(r);
} else {
int cmp_x_abs_1;
bf_set_ui(r, 1);
cmp_x_abs_1 = bf_cmpu(x, r);
if (cmp_x_abs_1 == 0 && (flags & BF_POW_JS_QUIRKS) &&
(y->expn >= BF_EXP_INF)) {
bf_set_nan(r);
} else if (cmp_x_abs_1 == 0 &&
(!x->sign || y->expn != BF_EXP_NAN)) {
/* pow(1, y) = 1 even if y = NaN */
/* pow(-1, +/-inf) = 1 */
} else if (y->expn == BF_EXP_NAN) {
bf_set_nan(r);
} else if (y->expn == BF_EXP_INF) {
if (y->sign == (cmp_x_abs_1 > 0)) {
bf_set_zero(r, 0);
} else {
bf_set_inf(r, 0);
}
} else {
quickjs/libbf.c view on Meta::CPAN
}
}
/* for debugging */
void bfdec_print_str(const char *str, const bfdec_t *a)
{
slimb_t i;
printf("%s=", str);
if (a->expn == BF_EXP_NAN) {
printf("NaN");
} else {
if (a->sign)
putchar('-');
if (a->expn == BF_EXP_ZERO) {
putchar('0');
} else if (a->expn == BF_EXP_INF) {
printf("Inf");
} else {
printf("0.");
for(i = a->len - 1; i >= 0; i--)
quickjs/libbf.c view on Meta::CPAN
}
/* abs(a) >= abs(b) */
if (cmp_res == 0 && is_sub && a->expn < BF_EXP_INF) {
/* zero result */
bfdec_set_zero(r, (flags & BF_RND_MASK) == BF_RNDD);
ret = 0;
} else if (a->len == 0 || b->len == 0) {
ret = 0;
if (a->expn >= BF_EXP_INF) {
if (a->expn == BF_EXP_NAN) {
/* at least one operand is NaN */
bfdec_set_nan(r);
ret = 0;
} else if (b->expn == BF_EXP_INF && is_sub) {
/* infinities with different signs */
bfdec_set_nan(r);
ret = BF_ST_INVALID_OP;
} else {
bfdec_set_inf(r, a_sign);
}
} else {
quickjs/libbf.h view on Meta::CPAN
#else
#define BF_CHKSUM_MOD 975620677U
#endif
#define BF_EXP_ZERO BF_RAW_EXP_MIN
#define BF_EXP_INF (BF_RAW_EXP_MAX - 1)
#define BF_EXP_NAN BF_RAW_EXP_MAX
/* +/-zero is represented with expn = BF_EXP_ZERO and len = 0,
+/-infinity is represented with expn = BF_EXP_INF and len = 0,
NaN is represented with expn = BF_EXP_NAN and len = 0 (sign is ignored)
*/
typedef struct {
struct bf_context_t *ctx;
int sign;
slimb_t expn;
limb_t len;
limb_t *tab;
} bf_t;
typedef struct {
quickjs/libbf.h view on Meta::CPAN
{
return ((BF_EXP_BITS_MAX - n) & BF_EXP_BITS_MASK) << BF_EXP_BITS_SHIFT;
}
/* returned status */
#define BF_ST_INVALID_OP (1 << 0)
#define BF_ST_DIVIDE_ZERO (1 << 1)
#define BF_ST_OVERFLOW (1 << 2)
#define BF_ST_UNDERFLOW (1 << 3)
#define BF_ST_INEXACT (1 << 4)
/* indicate that a memory allocation error occured. NaN is returned */
#define BF_ST_MEM_ERROR (1 << 5)
#define BF_RADIX_MAX 36 /* maximum radix for bf_atof() and bf_ftoa() */
static inline slimb_t bf_max(slimb_t a, slimb_t b)
{
if (a > b)
return a;
else
return b;
quickjs/libbf.h view on Meta::CPAN
slimb_t bf_get_exp_min(const bf_t *a);
int bf_logic_or(bf_t *r, const bf_t *a, const bf_t *b);
int bf_logic_xor(bf_t *r, const bf_t *a, const bf_t *b);
int bf_logic_and(bf_t *r, const bf_t *a, const bf_t *b);
/* additional flags for bf_atof */
/* do not accept hex radix prefix (0x or 0X) if radix = 0 or radix = 16 */
#define BF_ATOF_NO_HEX (1 << 16)
/* accept binary (0b or 0B) or octal (0o or 0O) radix prefix if radix = 0 */
#define BF_ATOF_BIN_OCT (1 << 17)
/* Do not parse NaN or Inf */
#define BF_ATOF_NO_NAN_INF (1 << 18)
/* return the exponent separately */
#define BF_ATOF_EXPONENT (1 << 19)
int bf_atof(bf_t *a, const char *str, const char **pnext, int radix,
limb_t prec, bf_flags_t flags);
/* this version accepts prec = BF_PREC_INF and returns the radix
exponent */
int bf_atof2(bf_t *r, slimb_t *pexponent,
const char *str, const char **pnext, int radix,
quickjs/libbf.h view on Meta::CPAN
/* add 0x prefix for base 16, 0o prefix for base 8 or 0b prefix for
base 2 if non zero value */
#define BF_FTOA_ADD_PREFIX (1 << 21)
/* return "Infinity" instead of "Inf" and add a "+" for positive
exponents */
#define BF_FTOA_JS_QUIRKS (1 << 22)
char *bf_ftoa(size_t *plen, const bf_t *a, int radix, limb_t prec,
bf_flags_t flags);
/* modulo 2^n instead of saturation. NaN and infinity return 0 */
#define BF_GET_INT_MOD (1 << 0)
int bf_get_int32(int *pres, const bf_t *a, int flags);
int bf_get_int64(int64_t *pres, const bf_t *a, int flags);
int bf_get_uint64(uint64_t *pres, const bf_t *a);
/* the following functions are exported for testing only. */
void mp_print_str(const char *str, const limb_t *tab, limb_t n);
void bf_print_str(const char *str, const bf_t *a);
int bf_resize(bf_t *r, limb_t len);
int bf_get_fft_size(int *pdpl, int *pnb_mods, limb_t len);
quickjs/libbf.h view on Meta::CPAN
limb_t mp_add_ui(limb_t *tab, limb_t b, size_t n);
int mp_sqrtrem(bf_context_t *s, limb_t *tabs, limb_t *taba, limb_t n);
int mp_recip(bf_context_t *s, limb_t *tabr, const limb_t *taba, limb_t n);
limb_t bf_isqrt(limb_t a);
/* transcendental functions */
int bf_const_log2(bf_t *T, limb_t prec, bf_flags_t flags);
int bf_const_pi(bf_t *T, limb_t prec, bf_flags_t flags);
int bf_exp(bf_t *r, const bf_t *a, limb_t prec, bf_flags_t flags);
int bf_log(bf_t *r, const bf_t *a, limb_t prec, bf_flags_t flags);
#define BF_POW_JS_QUIRKS (1 << 16) /* (+/-1)^(+/-Inf) = NaN, 1^NaN = NaN */
int bf_pow(bf_t *r, const bf_t *x, const bf_t *y, limb_t prec, bf_flags_t flags);
int bf_cos(bf_t *r, const bf_t *a, limb_t prec, bf_flags_t flags);
int bf_sin(bf_t *r, const bf_t *a, limb_t prec, bf_flags_t flags);
int bf_tan(bf_t *r, const bf_t *a, limb_t prec, bf_flags_t flags);
int bf_atan(bf_t *r, const bf_t *a, limb_t prec, bf_flags_t flags);
int bf_atan2(bf_t *r, const bf_t *y, const bf_t *x,
limb_t prec, bf_flags_t flags);
int bf_asin(bf_t *r, const bf_t *a, limb_t prec, bf_flags_t flags);
int bf_acos(bf_t *r, const bf_t *a, limb_t prec, bf_flags_t flags);
quickjs/qjscalc.js view on Meta::CPAN
return Float(a) ** Float(b);
}
function float_eq(a, b) {
/* XXX: may be better to use infinite precision for the comparison */
return Float(a) === Float(b);
}
function float_lt(a, b) {
a = Float(a);
b = Float(b);
/* XXX: may be better to use infinite precision for the comparison */
if (Float.isNaN(a) || Float.isNaN(b))
return undefined;
else
return a < b;
}
operators_set(Fraction.prototype,
{
"+": fraction_add,
"-": fraction_sub,
"*": fraction_mul,
quickjs/quickjs.c view on Meta::CPAN
union {
JSValue value; /* used when is_detached = TRUE */
struct {
struct list_head var_ref_link; /* JSStackFrame.var_ref_list list */
struct JSAsyncFunctionState *async_func; /* != NULL if async stack frame */
}; /* used when is_detached = FALSE */
};
} JSVarRef;
/* the same structure is used for big integers and big floats. Big
integers are never infinite or NaNs */
typedef struct JSBigFloat {
JSRefCountHeader header; /* must come first, 32-bit */
bf_t num;
} JSBigFloat;
#ifdef CONFIG_BIGNUM
typedef struct JSFloatEnv {
limb_t prec;
bf_flags_t flags;
unsigned int status;
quickjs/quickjs.c view on Meta::CPAN
c = *r;
if (c == '-') {
if (r >= r_end)
return JS_UNDEFINED;
r++;
c = *r;
/* -0 case is specific */
if (c == '0' && len == 2)
goto minus_zero;
}
/* XXX: should test NaN, but the tests do not check it */
if (!is_num(c)) {
/* XXX: String should be normalized, therefore 8-bit only */
const uint16_t nfinity16[7] = { 'n', 'f', 'i', 'n', 'i', 't', 'y' };
if (!(c =='I' && (r_end - r) == 8 &&
!memcmp(r + 1, nfinity16, sizeof(nfinity16))))
return JS_UNDEFINED;
}
} else {
const uint8_t *r = p->u.str8, *r_end = p->u.str8 + len;
if (r >= r_end)
quickjs/quickjs.c view on Meta::CPAN
int JS_ToFloat64(JSContext *ctx, double *pres, JSValueConst val)
{
return JS_ToFloat64Free(ctx, pres, JS_DupValue(ctx, val));
}
static JSValue JS_ToNumber(JSContext *ctx, JSValueConst val)
{
return JS_ToNumberFree(ctx, JS_DupValue(ctx, val));
}
/* same as JS_ToNumber() but return 0 in case of NaN/Undefined */
static __maybe_unused JSValue JS_ToIntegerFree(JSContext *ctx, JSValue val)
{
uint32_t tag;
JSValue ret;
redo:
tag = JS_VALUE_GET_NORM_TAG(val);
switch(tag) {
case JS_TAG_INT:
case JS_TAG_BOOL:
quickjs/quickjs.c view on Meta::CPAN
ret = (int64_t)d;
} else if (e <= (1023 + 62 + 53)) {
uint64_t v;
/* remainder modulo 2^64 */
v = (u.u64 & (((uint64_t)1 << 52) - 1)) | ((uint64_t)1 << 52);
ret = v << ((e - 1023) - 52);
/* take the sign into account */
if (u.u64 >> 63)
ret = -ret;
} else {
ret = 0; /* also handles NaN and +inf */
}
}
break;
#ifdef CONFIG_BIGNUM
case JS_TAG_BIG_FLOAT:
{
JSBigFloat *p = JS_VALUE_GET_PTR(val);
bf_get_int64(&ret, &p->num, BF_GET_INT_MOD);
JS_FreeValue(ctx, val);
}
quickjs/quickjs.c view on Meta::CPAN
} else if (e <= (1023 + 30 + 53)) {
uint64_t v;
/* remainder modulo 2^32 */
v = (u.u64 & (((uint64_t)1 << 52) - 1)) | ((uint64_t)1 << 52);
v = v << ((e - 1023) - 52 + 32);
ret = v >> 32;
/* take the sign into account */
if (u.u64 >> 63)
ret = -ret;
} else {
ret = 0; /* also handles NaN and +inf */
}
}
break;
#ifdef CONFIG_BIGNUM
case JS_TAG_BIG_FLOAT:
{
JSBigFloat *p = JS_VALUE_GET_PTR(val);
bf_get_int32(&ret, &p->num, BF_GET_INT_MOD);
JS_FreeValue(ctx, val);
}
quickjs/quickjs.c view on Meta::CPAN
/* XXX: slow and maybe not fully correct. Use libbf when it is fast enough.
XXX: radix != 10 is only supported for small integers
*/
static void js_dtoa1(char *buf, double d, int radix, int n_digits, int flags)
{
char *q;
if (!isfinite(d)) {
if (isnan(d)) {
strcpy(buf, "NaN");
} else {
q = buf;
if (d < 0)
*q++ = '-';
strcpy(q, "Infinity");
}
} else if (flags == JS_DTOA_VAR_FORMAT) {
int64_t i64;
char buf1[70], *ptr;
i64 = (int64_t)d;
quickjs/quickjs.c view on Meta::CPAN
return val;
a = JS_GetBigInt(val);
if (bf_set_ui(a, v)) {
JS_FreeValue(ctx, val);
return JS_ThrowOutOfMemory(ctx);
}
}
return val;
}
/* return NaN if bad bigint literal */
static JSValue JS_StringToBigInt(JSContext *ctx, JSValue val)
{
const char *str, *p;
size_t len;
int flags;
str = JS_ToCStringLen(ctx, &len, val);
JS_FreeValue(ctx, val);
if (!str)
return JS_EXCEPTION;
quickjs/quickjs.c view on Meta::CPAN
}
b = JS_ToBigFloat(ctx, &b_s, op2);
if (!b) {
if (a == &a_s)
bf_delete(a);
JS_FreeValue(ctx, op1);
return -1;
}
switch(op) {
case OP_lt:
res = bf_cmp_lt(a, b); /* if NaN return false */
break;
case OP_lte:
res = bf_cmp_le(a, b); /* if NaN return false */
break;
case OP_gt:
res = bf_cmp_lt(b, a); /* if NaN return false */
break;
case OP_gte:
res = bf_cmp_le(b, a); /* if NaN return false */
break;
case OP_eq:
res = bf_cmp_eq(a, b); /* if NaN return false */
break;
default:
abort();
}
if (a == &a_s)
bf_delete(a);
if (b == &b_s)
bf_delete(b);
JS_FreeValue(ctx, op1);
JS_FreeValue(ctx, op2);
quickjs/quickjs.c view on Meta::CPAN
op2 = JS_ToBigDecimalFree(ctx, op2, TRUE);
if (JS_IsException(op2)) {
JS_FreeValue(ctx, op1);
return -1;
}
a = JS_ToBigDecimal(ctx, op1); /* cannot fail */
b = JS_ToBigDecimal(ctx, op2); /* cannot fail */
switch(op) {
case OP_lt:
res = bfdec_cmp_lt(a, b); /* if NaN return false */
break;
case OP_lte:
res = bfdec_cmp_le(a, b); /* if NaN return false */
break;
case OP_gt:
res = bfdec_cmp_lt(b, a); /* if NaN return false */
break;
case OP_gte:
res = bfdec_cmp_le(b, a); /* if NaN return false */
break;
case OP_eq:
res = bfdec_cmp_eq(a, b); /* if NaN return false */
break;
default:
abort();
}
JS_FreeValue(ctx, op1);
JS_FreeValue(ctx, op2);
return res;
}
#endif /* !CONFIG_BIGNUM */
quickjs/quickjs.c view on Meta::CPAN
} else {
d1 = JS_VALUE_GET_INT(op1);
}
if (tag2 == JS_TAG_FLOAT64) {
d2 = JS_VALUE_GET_FLOAT64(op2);
} else {
d2 = JS_VALUE_GET_INT(op2);
}
switch(op) {
case OP_lt:
res = (d1 < d2); /* if NaN return false */
break;
case OP_lte:
res = (d1 <= d2); /* if NaN return false */
break;
case OP_gt:
res = (d1 > d2); /* if NaN return false */
break;
default:
case OP_gte:
res = (d1 >= d2); /* if NaN return false */
break;
}
}
}
done:
sp[-2] = JS_NewBool(ctx, res);
return 0;
exception:
sp[-2] = JS_UNDEFINED;
sp[-1] = JS_UNDEFINED;
quickjs/quickjs.c view on Meta::CPAN
d2 = JS_VALUE_GET_FLOAT64(op2);
} else if (tag2 == JS_TAG_INT) {
d2 = JS_VALUE_GET_INT(op2);
} else {
res = FALSE;
break;
}
number_test:
if (unlikely(eq_mode >= JS_EQ_SAME_VALUE)) {
JSFloat64Union u1, u2;
/* NaN is not always normalized, so this test is necessary */
if (isnan(d1) || isnan(d2)) {
res = isnan(d1) == isnan(d2);
} else if (eq_mode == JS_EQ_SAME_VALUE_ZERO) {
res = (d1 == d2); /* +0 == -0 */
} else {
u1.d = d1;
u2.d = d2;
res = (u1.u64 == u2.u64); /* +0 != -0 */
}
} else {
res = (d1 == d2); /* if NaN return false and +0 == -0 */
}
goto done_no_free;
case JS_TAG_BIG_INT:
{
bf_t a_s, *a, b_s, *b;
if (tag1 != tag2) {
res = FALSE;
break;
}
a = JS_ToBigFloat(ctx, &a_s, op1); /* cannot fail */
quickjs/quickjs.c view on Meta::CPAN
JS_NewGlobalCConstructor2(ctx, func_obj, name, proto);
return func_obj;
}
static JSValue js_global_eval(JSContext *ctx, JSValueConst this_val,
int argc, JSValueConst *argv)
{
return JS_EvalObject(ctx, ctx->global_obj, argv[0], JS_EVAL_TYPE_INDIRECT, -1);
}
static JSValue js_global_isNaN(JSContext *ctx, JSValueConst this_val,
int argc, JSValueConst *argv)
{
double d;
/* XXX: does this work for bigfloat? */
if (unlikely(JS_ToFloat64(ctx, &d, argv[0])))
return JS_EXCEPTION;
return JS_NewBool(ctx, isnan(d));
}
quickjs/quickjs.c view on Meta::CPAN
static JSValue js_number___toLength(JSContext *ctx, JSValueConst this_val,
int argc, JSValueConst *argv)
{
int64_t v;
if (JS_ToLengthFree(ctx, &v, JS_DupValue(ctx, argv[0])))
return JS_EXCEPTION;
return JS_NewInt64(ctx, v);
}
#endif
static JSValue js_number_isNaN(JSContext *ctx, JSValueConst this_val,
int argc, JSValueConst *argv)
{
if (!JS_IsNumber(argv[0]))
return JS_FALSE;
return js_global_isNaN(ctx, this_val, argc, argv);
}
static JSValue js_number_isFinite(JSContext *ctx, JSValueConst this_val,
int argc, JSValueConst *argv)
{
if (!JS_IsNumber(argv[0]))
return JS_FALSE;
return js_global_isFinite(ctx, this_val, argc, argv);
}
quickjs/quickjs.c view on Meta::CPAN
return JS_FALSE;
if (unlikely(JS_ToFloat64(ctx, &d, argv[0])))
return JS_EXCEPTION;
return JS_NewBool(ctx, is_safe_integer(d));
}
static const JSCFunctionListEntry js_number_funcs[] = {
/* global ParseInt and parseFloat should be defined already or delayed */
JS_ALIAS_BASE_DEF("parseInt", "parseInt", 0 ),
JS_ALIAS_BASE_DEF("parseFloat", "parseFloat", 0 ),
JS_CFUNC_DEF("isNaN", 1, js_number_isNaN ),
JS_CFUNC_DEF("isFinite", 1, js_number_isFinite ),
JS_CFUNC_DEF("isInteger", 1, js_number_isInteger ),
JS_CFUNC_DEF("isSafeInteger", 1, js_number_isSafeInteger ),
JS_PROP_DOUBLE_DEF("MAX_VALUE", 1.7976931348623157e+308, 0 ),
JS_PROP_DOUBLE_DEF("MIN_VALUE", 5e-324, 0 ),
JS_PROP_DOUBLE_DEF("NaN", NAN, 0 ),
JS_PROP_DOUBLE_DEF("NEGATIVE_INFINITY", -INFINITY, 0 ),
JS_PROP_DOUBLE_DEF("POSITIVE_INFINITY", INFINITY, 0 ),
JS_PROP_DOUBLE_DEF("EPSILON", 2.220446049250313e-16, 0 ), /* ES6 */
JS_PROP_DOUBLE_DEF("MAX_SAFE_INTEGER", 9007199254740991.0, 0 ), /* ES6 */
JS_PROP_DOUBLE_DEF("MIN_SAFE_INTEGER", -9007199254740991.0, 0 ), /* ES6 */
//JS_CFUNC_DEF("__toInteger", 1, js_number___toInteger ),
//JS_CFUNC_DEF("__toLength", 1, js_number___toLength ),
};
static JSValue js_thisNumberValue(JSContext *ctx, JSValueConst this_val)
quickjs/quickjs.c view on Meta::CPAN
void JS_AddIntrinsicStringNormalize(JSContext *ctx)
{
#ifdef CONFIG_ALL_UNICODE
JS_SetPropertyFunctionList(ctx, ctx->class_proto[JS_CLASS_STRING], js_string_proto_normalize,
countof(js_string_proto_normalize));
#endif
}
/* Math */
/* precondition: a and b are not NaN */
static double js_fmin(double a, double b)
{
if (a == 0 && b == 0) {
JSFloat64Union a1, b1;
a1.d = a;
b1.d = b;
a1.u64 |= b1.u64;
return a1.d;
} else {
return fmin(a, b);
}
}
/* precondition: a and b are not NaN */
static double js_fmax(double a, double b)
{
if (a == 0 && b == 0) {
JSFloat64Union a1, b1;
a1.d = a;
b1.d = b;
a1.u64 &= b1.u64;
return a1.d;
} else {
return fmax(a, b);
quickjs/quickjs.c view on Meta::CPAN
/* return +/-0.0 */
u.u64 &= (uint64_t)1 << 63;
}
} else if (e < (1023 + 52)) {
s = u.u64 >> 63;
one = (uint64_t)1 << (52 - (e - 1023));
frac_mask = one - 1;
u.u64 += (one >> 1) - s;
u.u64 &= ~frac_mask; /* truncate to an integer */
}
/* otherwise: abs(a) >= 2^52, or NaN, +/-Infinity: no change */
return u.d;
}
static JSValue js_math_hypot(JSContext *ctx, JSValueConst this_val,
int argc, JSValueConst *argv)
{
double r, a;
int i;
r = 0;
quickjs/quickjs.c view on Meta::CPAN
break;
case JS_TAG_OBJECT:
case JS_TAG_SYMBOL:
h = (uintptr_t)JS_VALUE_GET_PTR(key) * 3163;
break;
case JS_TAG_INT:
d = JS_VALUE_GET_INT(key) * 3163;
goto hash_float64;
case JS_TAG_FLOAT64:
d = JS_VALUE_GET_FLOAT64(key);
/* normalize the NaN */
if (isnan(d))
d = JS_FLOAT64_NAN;
hash_float64:
u.d = d;
h = (u.u32[0] ^ u.u32[1]) * 3163;
break;
default:
h = 0; /* XXX: bignum support */
break;
}
quickjs/quickjs.c view on Meta::CPAN
}
JS_FreeValue(ctx, str);
return string_buffer_end(b);
}
/* global object */
static const JSCFunctionListEntry js_global_funcs[] = {
JS_CFUNC_DEF("parseInt", 2, js_parseInt ),
JS_CFUNC_DEF("parseFloat", 1, js_parseFloat ),
JS_CFUNC_DEF("isNaN", 1, js_global_isNaN ),
JS_CFUNC_DEF("isFinite", 1, js_global_isFinite ),
JS_CFUNC_MAGIC_DEF("decodeURI", 1, js_global_decodeURI, 0 ),
JS_CFUNC_MAGIC_DEF("decodeURIComponent", 1, js_global_decodeURI, 1 ),
JS_CFUNC_MAGIC_DEF("encodeURI", 1, js_global_encodeURI, 0 ),
JS_CFUNC_MAGIC_DEF("encodeURIComponent", 1, js_global_encodeURI, 1 ),
JS_CFUNC_DEF("escape", 1, js_global_escape ),
JS_CFUNC_DEF("unescape", 1, js_global_unescape ),
JS_PROP_DOUBLE_DEF("Infinity", 1.0 / 0.0, 0 ),
JS_PROP_DOUBLE_DEF("NaN", NAN, 0 ),
JS_PROP_UNDEFINED_DEF("undefined", 0 ),
};
/* Date */
static int64_t math_mod(int64_t a, int64_t b) {
/* return positive modulo */
int64_t m = a % b;
return m + (m < 0) * b;
}
quickjs/quickjs.c view on Meta::CPAN
double fields[9], int is_local, int force)
{
double dval;
int64_t d, days, wd, y, i, md, h, m, s, ms, tz = 0;
if (JS_ThisTimeValue(ctx, &dval, obj))
return -1;
if (isnan(dval)) {
if (!force)
return FALSE; /* NaN */
d = 0; /* initialize all fields to 0 */
} else {
d = dval;
if (is_local) {
tz = -getTimezoneOffset(d);
d += tz * 60000;
}
}
/* result is >= 0, we can use % */
quickjs/quickjs.c view on Meta::CPAN
int y, mon, d, h, m, s, ms, wd, tz;
fmt = (magic >> 4) & 0x0F;
part = magic & 0x0F;
res = get_date_fields(ctx, this_val, fields, fmt & 1, 0);
if (res < 0)
return JS_EXCEPTION;
if (!res) {
if (fmt == 2)
return JS_ThrowRangeError(ctx, "Date value is NaN");
else
return JS_NewString(ctx, "Invalid Date");
}
y = fields[0];
mon = fields[1];
d = fields[2];
h = fields[3];
m = fields[4];
s = fields[5];
quickjs/quickjs.c view on Meta::CPAN
{
bf_t *a, a_s;
a = JS_ToBigFloat(ctx, &a_s, val);
if (!a) {
JS_FreeValue(ctx, val);
return JS_EXCEPTION;
}
if (!bf_is_finite(a)) {
JS_FreeValue(ctx, val);
val = JS_ThrowRangeError(ctx, "cannot convert NaN or Infinity to bigint");
} else {
JSValue val1 = JS_NewBigInt(ctx);
bf_t *r;
int ret;
if (JS_IsException(val1)) {
JS_FreeValue(ctx, val);
return JS_EXCEPTION;
}
r = JS_GetBigInt(val1);
ret = bf_set(r, a);
quickjs/quickjs.c view on Meta::CPAN
{
JSValueConst val = argv[0];
JSBigFloat *p;
if (JS_VALUE_GET_NORM_TAG(val) != JS_TAG_BIG_FLOAT)
return JS_FALSE;
p = JS_VALUE_GET_PTR(val);
return JS_NewBool(ctx, bf_is_finite(&p->num));
}
static JSValue js_bigfloat_isNaN(JSContext *ctx, JSValueConst this_val,
int argc, JSValueConst *argv)
{
JSValueConst val = argv[0];
JSBigFloat *p;
if (JS_VALUE_GET_NORM_TAG(val) != JS_TAG_BIG_FLOAT)
return JS_FALSE;
p = JS_VALUE_GET_PTR(val);
return JS_NewBool(ctx, bf_is_nan(&p->num));
}
quickjs/quickjs.c view on Meta::CPAN
}
static const JSCFunctionListEntry js_bigfloat_funcs[] = {
JS_CGETSET_MAGIC_DEF("PI", js_bigfloat_get_const, NULL, 0 ),
JS_CGETSET_MAGIC_DEF("LN2", js_bigfloat_get_const, NULL, 1 ),
JS_CGETSET_MAGIC_DEF("MIN_VALUE", js_bigfloat_get_const, NULL, 2 ),
JS_CGETSET_MAGIC_DEF("MAX_VALUE", js_bigfloat_get_const, NULL, 3 ),
JS_CGETSET_MAGIC_DEF("EPSILON", js_bigfloat_get_const, NULL, 4 ),
JS_CFUNC_DEF("parseFloat", 1, js_bigfloat_parseFloat ),
JS_CFUNC_DEF("isFinite", 1, js_bigfloat_isFinite ),
JS_CFUNC_DEF("isNaN", 1, js_bigfloat_isNaN ),
JS_CFUNC_MAGIC_DEF("abs", 1, js_bigfloat_fop, MATH_OP_ABS ),
JS_CFUNC_MAGIC_DEF("fpRound", 1, js_bigfloat_fop, MATH_OP_FPROUND ),
JS_CFUNC_MAGIC_DEF("floor", 1, js_bigfloat_fop, MATH_OP_FLOOR ),
JS_CFUNC_MAGIC_DEF("ceil", 1, js_bigfloat_fop, MATH_OP_CEIL ),
JS_CFUNC_MAGIC_DEF("round", 1, js_bigfloat_fop, MATH_OP_ROUND ),
JS_CFUNC_MAGIC_DEF("trunc", 1, js_bigfloat_fop, MATH_OP_TRUNC ),
JS_CFUNC_MAGIC_DEF("sqrt", 1, js_bigfloat_fop, MATH_OP_SQRT ),
JS_CFUNC_MAGIC_DEF("acos", 1, js_bigfloat_fop, MATH_OP_ACOS ),
JS_CFUNC_MAGIC_DEF("asin", 1, js_bigfloat_fop, MATH_OP_ASIN ),
JS_CFUNC_MAGIC_DEF("atan", 1, js_bigfloat_fop, MATH_OP_ATAN ),
quickjs/quickjs.c view on Meta::CPAN
break;
}
}
}
break;
case JS_CLASS_FLOAT32_ARRAY:
if (is_bigint)
break;
if (isnan(d)) {
const float *pv = p->u.array.u.float_ptr;
/* special case: indexOf returns -1, includes finds NaN */
if (special != special_includes)
goto done;
for (; k != stop; k += inc) {
if (isnan(pv[k])) {
res = k;
break;
}
}
} else if ((f = (float)d) == d) {
const float *pv = p->u.array.u.float_ptr;
quickjs/quickjs.c view on Meta::CPAN
break;
}
}
}
break;
case JS_CLASS_FLOAT64_ARRAY:
if (is_bigint)
break;
if (isnan(d)) {
const double *pv = p->u.array.u.double_ptr;
/* special case: indexOf returns -1, includes finds NaN */
if (special != special_includes)
goto done;
for (; k != stop; k += inc) {
if (isnan(pv[k])) {
res = k;
break;
}
}
} else {
const double *pv = p->u.array.u.double_ptr;
quickjs/quickjs.h view on Meta::CPAN
#ifdef CONFIG_CHECK_JSVALUE
/* JSValue consistency : it is not possible to run the code in this
mode, but it is useful to detect simple reference counting
errors. It would be interesting to modify a static C analyzer to
handle specific annotations (clang has such annotations but only
for objective C) */
typedef struct __JSValue *JSValue;
typedef const struct __JSValue *JSValueConst;
#define JS_VALUE_GET_TAG(v) (int)((uintptr_t)(v) & 0xf)
/* same as JS_VALUE_GET_TAG, but return JS_TAG_FLOAT64 with NaN boxing */
#define JS_VALUE_GET_NORM_TAG(v) JS_VALUE_GET_TAG(v)
#define JS_VALUE_GET_INT(v) (int)((intptr_t)(v) >> 4)
#define JS_VALUE_GET_BOOL(v) JS_VALUE_GET_INT(v)
#define JS_VALUE_GET_FLOAT64(v) (double)JS_VALUE_GET_INT(v)
#define JS_VALUE_GET_PTR(v) (void *)((intptr_t)(v) & ~0xf)
#define JS_MKVAL(tag, val) (JSValue)(intptr_t)(((val) << 4) | (tag))
#define JS_MKPTR(tag, p) (JSValue)((intptr_t)(p) | (tag))
#define JS_TAG_IS_FLOAT64(tag) ((unsigned)(tag) == JS_TAG_FLOAT64)
quickjs/quickjs.h view on Meta::CPAN
#define JSValueConst JSValue
#define JS_VALUE_GET_TAG(v) (int)((v) >> 32)
#define JS_VALUE_GET_INT(v) (int)(v)
#define JS_VALUE_GET_BOOL(v) (int)(v)
#define JS_VALUE_GET_PTR(v) (void *)(intptr_t)(v)
#define JS_MKVAL(tag, val) (((uint64_t)(tag) << 32) | (uint32_t)(val))
#define JS_MKPTR(tag, ptr) (((uint64_t)(tag) << 32) | (uintptr_t)(ptr))
#define JS_FLOAT64_TAG_ADDEND (0x7ff80000 - JS_TAG_FIRST + 1) /* quiet NaN encoding */
static inline double JS_VALUE_GET_FLOAT64(JSValue v)
{
union {
JSValue v;
double d;
} u;
u.v = v;
u.v += (uint64_t)JS_FLOAT64_TAG_ADDEND << 32;
return u.d;
quickjs/quickjs.h view on Meta::CPAN
#define JS_NAN (0x7ff8000000000000 - ((uint64_t)JS_FLOAT64_TAG_ADDEND << 32))
static inline JSValue __JS_NewFloat64(JSContext *ctx, double d)
{
union {
double d;
uint64_t u64;
} u;
JSValue v;
u.d = d;
/* normalize NaN */
if (js_unlikely((u.u64 & 0x7fffffffffffffff) > 0x7ff0000000000000))
v = JS_NAN;
else
v = u.u64 - ((uint64_t)JS_FLOAT64_TAG_ADDEND << 32);
return v;
}
#define JS_TAG_IS_FLOAT64(tag) ((unsigned)((tag) - JS_TAG_FIRST) >= (JS_TAG_FLOAT64 - JS_TAG_FIRST))
/* same as JS_VALUE_GET_TAG, but return JS_TAG_FLOAT64 with NaN boxing */
static inline int JS_VALUE_GET_NORM_TAG(JSValue v)
{
uint32_t tag;
tag = JS_VALUE_GET_TAG(v);
if (JS_TAG_IS_FLOAT64(tag))
return JS_TAG_FLOAT64;
else
return tag;
}
quickjs/quickjs.h view on Meta::CPAN
} JSValueUnion;
typedef struct JSValue {
JSValueUnion u;
int64_t tag;
} JSValue;
#define JSValueConst JSValue
#define JS_VALUE_GET_TAG(v) ((int32_t)(v).tag)
/* same as JS_VALUE_GET_TAG, but return JS_TAG_FLOAT64 with NaN boxing */
#define JS_VALUE_GET_NORM_TAG(v) JS_VALUE_GET_TAG(v)
#define JS_VALUE_GET_INT(v) ((v).u.int32)
#define JS_VALUE_GET_BOOL(v) ((v).u.int32)
#define JS_VALUE_GET_FLOAT64(v) ((v).u.float64)
#define JS_VALUE_GET_PTR(v) ((v).u.ptr)
#define JS_MKVAL(tag, val) (JSValue){ (JSValueUnion){ .int32 = val }, tag }
#define JS_MKPTR(tag, p) (JSValue){ (JSValueUnion){ .ptr = p }, tag }
#define JS_TAG_IS_FLOAT64(tag) ((unsigned)(tag) == JS_TAG_FLOAT64)
quickjs/repl.js view on Meta::CPAN
if (c < 0xdc00 || c >= 0xe000)
len++;
}
return len;
}
function is_trailing_surrogate(c) {
var d;
if (typeof c !== "string")
return false;
d = c.codePointAt(0); /* can be NaN if empty string */
return d >= 0xdc00 && d < 0xe000;
}
function is_balanced(a, b) {
switch (a + b) {
case "()":
case "[]":
case "{}":
return true;
}
quickjs/repl.js view on Meta::CPAN
return "a";
case ']':
return [];
case '}':
return {};
case '/':
return / /;
default:
if (is_word(c)) {
base = get_context_word(line, pos);
if (["true", "false", "null", "this"].includes(base) || !isNaN(+base))
return eval(base);
obj = get_context_object(line, pos - base.length);
if (obj === null || obj === void 0)
return obj;
if (obj === g && obj[base] === void 0)
return eval(base);
else
return obj[base];
}
return {};
quickjs/repl.js view on Meta::CPAN
(cursor_pos > cmd.length) ? cmd.length : cursor_pos;
update();
}
var hex_mode = false;
var eval_mode = "std";
function number_to_string(a, radix) {
var s;
if (!isFinite(a)) {
/* NaN, Infinite */
return a.toString();
} else {
if (a == 0) {
if (1 / a < 0)
s = "-0";
else
s = "0";
} else {
if (radix == 16 && a === Math.floor(a)) {
var s;
quickjs/repl.js view on Meta::CPAN
s = a.toString();
}
}
return s;
}
}
function bigfloat_to_string(a, radix) {
var s;
if (!BigFloat.isFinite(a)) {
/* NaN, Infinite */
if (eval_mode !== "math") {
return "BigFloat(" + a.toString() + ")";
} else {
return a.toString();
}
} else {
if (a == 0) {
if (1 / a < 0)
s = "-0";
else
quickjs/repl.js view on Meta::CPAN
expBits = 11;
} else if (param[0] === "f128") {
prec = 113;
expBits = 15;
} else {
prec1 = parseInt(param[0]);
if (param.length >= 2)
expBits1 = parseInt(param[1]);
else
expBits1 = BigFloatEnv.expBitsMax;
if (Number.isNaN(prec1) ||
prec1 < BigFloatEnv.precMin ||
prec1 > BigFloatEnv.precMax) {
std.puts("Invalid precision\n");
return false;
}
if (Number.isNaN(expBits1) ||
expBits1 < BigFloatEnv.expBitsMin ||
expBits1 > BigFloatEnv.expBitsMax) {
std.puts("Invalid exponent bits\n");
return false;
}
prec = prec1;
expBits = expBits1;
}
return false;
} else if (has_bignum && cmd === "digits") {
quickjs/repl.js view on Meta::CPAN
}
}
var js_keywords = "|" +
"break|case|catch|continue|debugger|default|delete|do|" +
"else|finally|for|function|if|in|instanceof|new|" +
"return|switch|this|throw|try|typeof|while|with|" +
"class|const|enum|import|export|extends|super|" +
"implements|interface|let|package|private|protected|" +
"public|static|yield|" +
"undefined|null|true|false|Infinity|NaN|" +
"eval|arguments|" +
"await|";
var js_no_regex = "|this|super|undefined|null|true|false|Infinity|NaN|arguments|";
var js_types = "|void|var|";
function parse_identifier() {
can_regex = 1;
while (i < n && is_word(str[i]))
i++;
var w = '|' + str.substring(start, i) + '|';
quickjs/tests/test_bignum.js view on Meta::CPAN
e = new BigFloatEnv(128);
assert(e.prec == 128);
a = BigFloat.sqrt(2l, e);
assert(a === BigFloat.parseFloat("0x1.6a09e667f3bcc908b2fb1366ea957d3e", 0, e));
assert(e.inexact === true);
assert(BigFloat.fpRound(a) == 0x1.6a09e667f3bcc908b2fb1366ea95l);
b = BigFloatEnv.setPrec(BigFloat.sqrt.bind(null, 2), 128);
assert(a === b);
assert(BigFloat.isNaN(BigFloat(NaN)));
assert(BigFloat.isFinite(1l));
assert(!BigFloat.isFinite(1l/0l));
assert(BigFloat.abs(-3l) === 3l);
assert(BigFloat.sign(-3l) === -1l);
assert(BigFloat.exp(0.2l) === 1.2214027581601698339210719946396742l);
assert(BigFloat.log(3l) === 1.0986122886681096913952452369225256l);
assert(BigFloat.pow(2.1l, 1.6l) === 3.277561666451861947162828744873745l);
quickjs/tests/test_bjson.js view on Meta::CPAN
assert(array[i].typed_array.byteOffset, i);
}
}
function bjson_test_all()
{
var obj;
bjson_test({x:1, y:2, if:3});
bjson_test([1, 2, 3]);
bjson_test([1.0, "aa", true, false, undefined, null, NaN, -Infinity, -0.0]);
if (typeof BigInt !== "undefined") {
bjson_test([BigInt("1"), -BigInt("0x123456789"),
BigInt("0x123456789abcdef123456789abcdef")]);
}
if (typeof BigFloat !== "undefined") {
BigFloatEnv.setPrec(function () {
bjson_test([BigFloat("0.1"), BigFloat("-1e30"), BigFloat("0"),
BigFloat("-0"), BigFloat("Infinity"), BigFloat("-Infinity"),
0.0 / BigFloat("0"), BigFloat.MAX_VALUE,
BigFloat.MIN_VALUE]);
quickjs/tests/test_builtin.js view on Meta::CPAN
assert(a.codePointAt(0), 0x10ffff);
assert(String.fromCodePoint(0x10ffff), a);
assert("a".concat("b", "c"), "abc");
assert("abcabc".indexOf("cab"), 2);
assert("abcabc".indexOf("cab2"), -1);
assert("abc".indexOf("c"), 2);
assert("aaa".indexOf("a"), 0);
assert("aaa".indexOf("a", NaN), 0);
assert("aaa".indexOf("a", -Infinity), 0);
assert("aaa".indexOf("a", -1), 0);
assert("aaa".indexOf("a", -0), 0);
assert("aaa".indexOf("a", 0), 0);
assert("aaa".indexOf("a", 1), 1);
assert("aaa".indexOf("a", 2), 2);
assert("aaa".indexOf("a", 3), -1);
assert("aaa".indexOf("a", 4), -1);
assert("aaa".indexOf("a", Infinity), -1);
assert("aaa".indexOf(""), 0);
assert("aaa".indexOf("", NaN), 0);
assert("aaa".indexOf("", -Infinity), 0);
assert("aaa".indexOf("", -1), 0);
assert("aaa".indexOf("", -0), 0);
assert("aaa".indexOf("", 0), 0);
assert("aaa".indexOf("", 1), 1);
assert("aaa".indexOf("", 2), 2);
assert("aaa".indexOf("", 3), 3);
assert("aaa".indexOf("", 4), 3);
assert("aaa".indexOf("", Infinity), 3);
assert("aaa".lastIndexOf("a"), 2);
assert("aaa".lastIndexOf("a", NaN), 2);
assert("aaa".lastIndexOf("a", -Infinity), 0);
assert("aaa".lastIndexOf("a", -1), 0);
assert("aaa".lastIndexOf("a", -0), 0);
assert("aaa".lastIndexOf("a", 0), 0);
assert("aaa".lastIndexOf("a", 1), 1);
assert("aaa".lastIndexOf("a", 2), 2);
assert("aaa".lastIndexOf("a", 3), 2);
assert("aaa".lastIndexOf("a", 4), 2);
assert("aaa".lastIndexOf("a", Infinity), 2);
assert("aaa".lastIndexOf(""), 3);
assert("aaa".lastIndexOf("", NaN), 3);
assert("aaa".lastIndexOf("", -Infinity), 0);
assert("aaa".lastIndexOf("", -1), 0);
assert("aaa".lastIndexOf("", -0), 0);
assert("aaa".lastIndexOf("", 0), 0);
assert("aaa".lastIndexOf("", 1), 1);
assert("aaa".lastIndexOf("", 2), 2);
assert("aaa".lastIndexOf("", 3), 3);
assert("aaa".lastIndexOf("", 4), 3);
assert("aaa".lastIndexOf("", Infinity), 3);
quickjs/tests/test_builtin.js view on Meta::CPAN
assert(parseInt("0x123"), 0x123);
assert(parseInt("0o123"), 0);
assert(+" 123 ", 123);
assert(+"0b111", 7);
assert(+"0o123", 83);
assert(parseFloat("0x1234"), 0);
assert(parseFloat("Infinity"), Infinity);
assert(parseFloat("-Infinity"), -Infinity);
assert(parseFloat("123.2"), 123.2);
assert(parseFloat("123.2e3"), 123200);
assert(Number.isNaN(Number("+")));
assert(Number.isNaN(Number("-")));
assert(Number.isNaN(Number("\x00a")));
assert((25).toExponential(0), "3e+1");
assert((-25).toExponential(0), "-3e+1");
assert((2.5).toPrecision(1), "3");
assert((-2.5).toPrecision(1), "-3");
assert((1.125).toFixed(2), "1.13");
assert((-1.125).toFixed(2), "-1.13");
}
function test_eval2()
quickjs/tests/test_language.js view on Meta::CPAN
assert((2 > 1), true, "(2 > 1) === true");
assert(('b' > 'a'), true, "('b' > 'a') === true");
assert(2 ** 8, 256, "2 ** 8 === 256");
}
function test_cvt()
{
assert((NaN | 0) === 0);
assert((Infinity | 0) === 0);
assert(((-Infinity) | 0) === 0);
assert(("12345" | 0) === 12345);
assert(("0x12345" | 0) === 0x12345);
assert(((4294967296 * 3 - 4) | 0) === -4);
assert(("12345" >>> 0) === 12345);
assert(("0x12345" >>> 0) === 0x12345);
assert((NaN >>> 0) === 0);
assert((Infinity >>> 0) === 0);
assert(((-Infinity) >>> 0) === 0);
assert(((4294967296 * 3 - 4) >>> 0) === (4294967296 - 4));
assert((19686109595169230000).toString() === "19686109595169230000");
}
function test_eq()
{
assert(null == undefined);
assert(undefined == null);
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