--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/thirdparty/mujs/jsnumber.c	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,198 @@
+#include "jsi.h"
+
+#if defined(_MSC_VER) && (_MSC_VER < 1700) /* VS2012 has stdint.h */
+typedef unsigned __int64 uint64_t;
+#else
+#include <stdint.h>
+#endif
+
+static void jsB_new_Number(js_State *J)
+{
+	js_newnumber(J, js_gettop(J) > 1 ? js_tonumber(J, 1) : 0);
+}
+
+static void jsB_Number(js_State *J)
+{
+	js_pushnumber(J, js_gettop(J) > 1 ? js_tonumber(J, 1) : 0);
+}
+
+static void Np_valueOf(js_State *J)
+{
+	js_Object *self = js_toobject(J, 0);
+	if (self->type != JS_CNUMBER) js_typeerror(J, "not a number");
+	js_pushnumber(J, self->u.number);
+}
+
+static void Np_toString(js_State *J)
+{
+	char buf[100];
+	js_Object *self = js_toobject(J, 0);
+	int radix = js_isundefined(J, 1) ? 10 : js_tointeger(J, 1);
+	double x = 0;
+	if (self->type != JS_CNUMBER)
+		js_typeerror(J, "not a number");
+	x = self->u.number;
+	if (radix == 10) {
+		js_pushstring(J, jsV_numbertostring(J, buf, x));
+		return;
+	}
+	if (radix < 2 || radix > 36)
+		js_rangeerror(J, "invalid radix");
+
+	/* lame number to string conversion for any radix from 2 to 36 */
+	{
+		static const char digits[] = "0123456789abcdefghijklmnopqrstuvwxyz";
+		double number = x;
+		int sign = x < 0;
+		js_Buffer *sb = NULL;
+		uint64_t u, limit = ((uint64_t)1<<52);
+
+		int ndigits, exp, point;
+
+		if (number == 0) { js_pushstring(J, "0"); return; }
+		if (isnan(number)) { js_pushstring(J, "NaN"); return; }
+		if (isinf(number)) { js_pushstring(J, sign ? "-Infinity" : "Infinity"); return; }
+
+		if (sign)
+			number = -number;
+
+		/* fit as many digits as we want in an int */
+		exp = 0;
+		while (number * pow(radix, exp) > limit)
+			--exp;
+		while (number * pow(radix, exp+1) < limit)
+			++exp;
+		u = number * pow(radix, exp) + 0.5;
+
+		/* trim trailing zeros */
+		while (u > 0 && (u % radix) == 0) {
+			u /= radix;
+			--exp;
+		}
+
+		/* serialize digits */
+		ndigits = 0;
+		while (u > 0) {
+			buf[ndigits++] = digits[u % radix];
+			u /= radix;
+		}
+		point = ndigits - exp;
+
+		if (js_try(J)) {
+			js_free(J, sb);
+			js_throw(J);
+		}
+
+		if (sign)
+			js_putc(J, &sb, '-');
+
+		if (point <= 0) {
+			js_putc(J, &sb, '0');
+			js_putc(J, &sb, '.');
+			while (point++ < 0)
+				js_putc(J, &sb, '0');
+			while (ndigits-- > 0)
+				js_putc(J, &sb, buf[ndigits]);
+		} else {
+			while (ndigits-- > 0) {
+				js_putc(J, &sb, buf[ndigits]);
+				if (--point == 0 && ndigits > 0)
+					js_putc(J, &sb, '.');
+			}
+			while (point-- > 0)
+				js_putc(J, &sb, '0');
+		}
+
+		js_putc(J, &sb, 0);
+		js_pushstring(J, sb->s);
+
+		js_endtry(J);
+		js_free(J, sb);
+	}
+}
+
+/* Customized ToString() on a number */
+static void numtostr(js_State *J, const char *fmt, int w, double n)
+{
+	/* buf needs to fit printf("%.20f", 1e20) */
+	char buf[50], *e;
+	sprintf(buf, fmt, w, n);
+	e = strchr(buf, 'e');
+	if (e) {
+		int exp = atoi(e+1);
+		sprintf(e, "e%+d", exp);
+	}
+	js_pushstring(J, buf);
+}
+
+static void Np_toFixed(js_State *J)
+{
+	js_Object *self = js_toobject(J, 0);
+	int width = js_tointeger(J, 1);
+	char buf[32];
+	double x;
+	if (self->type != JS_CNUMBER) js_typeerror(J, "not a number");
+	if (width < 0) js_rangeerror(J, "precision %d out of range", width);
+	if (width > 20) js_rangeerror(J, "precision %d out of range", width);
+	x = self->u.number;
+	if (isnan(x) || isinf(x) || x <= -1e21 || x >= 1e21)
+		js_pushstring(J, jsV_numbertostring(J, buf, x));
+	else
+		numtostr(J, "%.*f", width, x);
+}
+
+static void Np_toExponential(js_State *J)
+{
+	js_Object *self = js_toobject(J, 0);
+	int width = js_tointeger(J, 1);
+	char buf[32];
+	double x;
+	if (self->type != JS_CNUMBER) js_typeerror(J, "not a number");
+	if (width < 0) js_rangeerror(J, "precision %d out of range", width);
+	if (width > 20) js_rangeerror(J, "precision %d out of range", width);
+	x = self->u.number;
+	if (isnan(x) || isinf(x))
+		js_pushstring(J, jsV_numbertostring(J, buf, x));
+	else
+		numtostr(J, "%.*e", width, x);
+}
+
+static void Np_toPrecision(js_State *J)
+{
+	js_Object *self = js_toobject(J, 0);
+	int width = js_tointeger(J, 1);
+	char buf[32];
+	double x;
+	if (self->type != JS_CNUMBER) js_typeerror(J, "not a number");
+	if (width < 1) js_rangeerror(J, "precision %d out of range", width);
+	if (width > 21) js_rangeerror(J, "precision %d out of range", width);
+	x = self->u.number;
+	if (isnan(x) || isinf(x))
+		js_pushstring(J, jsV_numbertostring(J, buf, x));
+	else
+		numtostr(J, "%.*g", width, x);
+}
+
+void jsB_initnumber(js_State *J)
+{
+	J->Number_prototype->u.number = 0;
+
+	js_pushobject(J, J->Number_prototype);
+	{
+		jsB_propf(J, "Number.prototype.valueOf", Np_valueOf, 0);
+		jsB_propf(J, "Number.prototype.toString", Np_toString, 1);
+		jsB_propf(J, "Number.prototype.toLocaleString", Np_toString, 0);
+		jsB_propf(J, "Number.prototype.toFixed", Np_toFixed, 1);
+		jsB_propf(J, "Number.prototype.toExponential", Np_toExponential, 1);
+		jsB_propf(J, "Number.prototype.toPrecision", Np_toPrecision, 1);
+	}
+	js_newcconstructor(J, jsB_Number, jsB_new_Number, "Number", 0); /* 1 */
+	{
+		jsB_propn(J, "MAX_VALUE", 1.7976931348623157e+308);
+		jsB_propn(J, "MIN_VALUE", 5e-324);
+		jsB_propn(J, "NaN", NAN);
+		jsB_propn(J, "NEGATIVE_INFINITY", -INFINITY);
+		jsB_propn(J, "POSITIVE_INFINITY", INFINITY);
+	}
+	js_defglobal(J, "Number", JS_DONTENUM);
+}