#ifndef _MATH_H_87af1aed_
#define _MATH_H_87af1aed_

/*
 * APIs exported by math.c   These are various mathematical or
 *  semimathematical utility routines.
 */

/*
 * Return (what a mathematician would call) ceil(sqrt(N)).  The
 *  argument and return value are both integers.  An argument of 0 or
 *  less is an error; it will return something, but it will not be
 *  useful.
 */
extern int isqrt(int);

/*
 * how_many(X,Y) returns (what a mathematician would call) ceil(X/Y):
 *  the number of Y-sized blocks needed to add up to at least X,
 *  rounded up to an integer.
 */
extern unsigned int how_many(unsigned int, unsigned int);

#endif