Trig normalizer for maths

/*
 * What this script does is
 * by some sort of mathematic rules,
 * normalizes numbers for use in trigonometry
 * and pretty much gives you their values as well.

*/ /*
        Time stands still when you're with me
        How can I make you see
        your crazy antics make me want to scream
        your name so loud till my throat starts to bleed
*/
var d = { // Logging object, extremely useful & reusable
    OUTPUT: 1,
    ERRORS: 2,
    LOGGING: 4,

    flags: this.OUTPUT | this.ERRORS | this.LOGGING,

    // Order by importance of error: 0 lowest, X highest.
    ERRTHRES: 2, // Error threshold. Lower than this is ignored.
    // Order by verbosity of logging: 0 lowest, X highest.
    LOGTHRES: 6, // Logging threshold. HIGHER than this ignored.

    log: function(data, level) {
        if(!(this.flags & this.LOGGING) || level < this.LOGTHRES) return;
        if (!level)
            level = 0;
        console.log("[DEBUG " + level + "]: "+ data);
    },
    err: function(data, level) {
        if(!(this.flags & this.ERRORS) || level > this.ERRTHRES) return;
        if (!level)
            level = 0;
        console.log("[ERROR "+ level + "]: "+ data);
    },
    out: function(data) {
        if(!(this.flags & this.OUTPUT)) return;
        console.log("[OUTPUT]: "+ data);
    }
}

// angles go in degrees
function normalizeTrig(angle, type) {
    if("sincostan".indexOf(type) == -1)
        d.err("Type is not a trig function", 3);
    while (angle > 90)
    {
        if (angle < 180) {
            angle = angle - 90;
            angle = 90 - angle;
            if (type == "cos" || type == "tan")
                angle = -angle;
            d.log ("angle is now: " + angle, 5);
            break;
        }
        else if(angle > 180 && angle < 270) {
            angle = angle - 180;
            if (type == "cos" || type == "sin")
                angle = -angle;
            d.log ("angle is now: " + angle, 5);
            break;
        }
        else if(angle > 270 && angle < 360) {
            angle = angle - 270;
            angle = 90 - angle;
            if (type == "sin" || type == "tan")
                angle = -angle;
            d.log ("angle is now: " + angle, 5);
            break;
        }
        else if(angle > 360) {
            angle -= 360;
            d.log ("angle is now: " + angle, 5);
        }
    }
    return angle;



}
function init() {
    var number, i;
    console.log("Started.");
    console.log("Logging flags: "+
            (d.LOGGING ? "LOGGING " : "") +
            (d.ERRORS ? "ERRORS " : "") +
            (d.OUTPUT ? "OUTPUT " : ""));
    console.log("Now doing maths.");
    for (i=0;i<100;i++) {
        number = Math.random() * 10000;
        console.log("sin " + number + " = sin " + normalizeTrig(number, "sin"));
    }
}

init();