Update for version 0.8

This commit is contained in:
Yannick Verschueren 2004-02-13 09:38:52 +00:00
parent 28283c60ea
commit 4be829988a
3 changed files with 479 additions and 259 deletions

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@ -32,9 +32,9 @@
#define int64 long long
#endif
/* <summary> */
/* Multiply two fixed-precision rational numbers. */
/* </summary> */
/*
* Multiply two fixed-precision rational numbers.
*/
int fix_mul(int a, int b)
{
return (int) ((int64) a * (int64) b >> 13);

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@ -27,13 +27,60 @@
#ifndef __INT_H
#define __INT_H
/*
* Get the minimum of two integers.
*
* returns a if a < b else b
*/
int int_min(int a, int b);
/*
* Get the maximum of two integers.
*
* returns a if a > b else b
*/
int int_max(int a, int b);
/*
* Clamp an integer inside an interval.
*
* return a if (min < a < max)
* return max if (a > max)
* return min if (a < min)
*/
int int_clamp(int a, int min, int max);
/*
* Get absolute value of integer.
*/
int int_abs(int a);
/*
* Divide an integer and round upwards.
*
* a divided by b
*/
int int_ceildiv(int a, int b);
/*
* Divide an integer by a power of 2 and round upwards.
*
* a divided by 2^b
*/
int int_ceildivpow2(int a, int b);
/*
* Divide an integer by a power of 2 and round downwards.
*
* a divided by 2^b
*/
int int_floordivpow2(int a, int b);
/*
* Get logarithm of an integer and round downwards.
*
* log2(a)
*/
int int_floorlog2(int a);
#endif

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