ref: 46dec712a71b4155f66b40ac92eb796d7e1fab89
dir: /jsnumber.c/
#include "jsi.h" #include "jsvalue.h" #include "jsbuiltin.h" static int jsB_new_Number(js_State *J, int argc) { js_newnumber(J, js_isdefined(J, 1) ? js_tonumber(J, 1) : 0); return 1; } static int jsB_Number(js_State *J, int argc) { js_pushnumber(J, js_isdefined(J, 1) ? js_tonumber(J, 1) : 0); return 1; } static int Np_valueOf(js_State *J, int argc) { js_Object *self = js_toobject(J, 0); if (self->type != JS_CNUMBER) js_typeerror(J, "not a number"); js_pushnumber(J, self->u.number); return 1; } static int Np_toString(js_State *J, int argc) { js_Object *self = js_toobject(J, 0); if (self->type != JS_CNUMBER) js_typeerror(J, "not a number"); js_pushliteral(J, jsV_numbertostring(J, self->u.number)); return 1; } static int Np_toFixed(js_State *J, int argc) { char buf[40]; js_Object *self = js_toobject(J, 0); int width = js_tonumber(J, 1); if (self->type != JS_CNUMBER) js_typeerror(J, "not a number"); sprintf(buf, "%.*f", width, self->u.number); js_pushstring(J, buf); return 1; } static int Np_toExponential(js_State *J, int argc) { char buf[40]; js_Object *self = js_toobject(J, 0); int width = js_tonumber(J, 1); if (self->type != JS_CNUMBER) js_typeerror(J, "not a number"); sprintf(buf, "%.*e", width, self->u.number); js_pushstring(J, buf); return 1; } static int Np_toPrecision(js_State *J, int argc) { char buf[40]; js_Object *self = js_toobject(J, 0); int width = js_tonumber(J, 1); if (self->type != JS_CNUMBER) js_typeerror(J, "not a number"); sprintf(buf, "%.*g", width, self->u.number); js_pushstring(J, buf); return 1; } void jsB_initnumber(js_State *J) { J->Number_prototype->u.number = 0; js_pushobject(J, J->Number_prototype); { jsB_propf(J, "valueOf", Np_valueOf, 0); jsB_propf(J, "toString", Np_toString, 1); jsB_propf(J, "toLocaleString", Np_toString, 0); jsB_propf(J, "toFixed", Np_toFixed, 1); jsB_propf(J, "toExponential", Np_toExponential, 1); jsB_propf(J, "toPrecision", Np_toPrecision, 1); } js_newcconstructor(J, jsB_Number, jsB_new_Number, 1); { jsB_propn(J, "MAX_VALUE", DBL_MAX); jsB_propn(J, "MIN_VALUE", DBL_MIN); jsB_propn(J, "NaN", NAN); jsB_propn(J, "NEGATIVE_INFINITY", -INFINITY); jsB_propn(J, "POSITIVE_INFINITY", INFINITY); } js_defglobal(J, "Number", JS_DONTENUM); }