double ceil(variant x)		    { return ceil((double)x); }
double floor(variant x)		    { return floor((double)x); }
double exp(variant x)		    { return exp((double)x); }
double sqrt(variant x)		    { return sqrt((double)x); }
double log10(variant x)		    { return log10((double)x); }
double sin(variant x)		    { return sin((double)x); }
double cos(variant x)		    { return cos((double)x); }
double tan(variant x)		    { return tan((double)x); }