Differences

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--- rounding [2019/04/18 21:43] – korshun
+++ rounding [2019/04/18 22:05] – korshun
@@ Line 20: / Line 20: @@
 ^  -1.8|        -2|        -2|       -1|        -1|
-Every rounding mode is available as two functions. The ones with the ''i'' prefix in the name return an integer, while the ones without return a fixed-point number:
+Every rounding mode is available as two functions:
+  * Functions without the ''i'' prefix return a fixed, e.g. ''floor(2.3) == 2.0''.
+  * Functions with the ''i'' prefix return an int, e.g ''ifloor(2.3) == 2''.
-^ Mode  ^ as fixed ^ as int ^
+^ Mode  ^ fixed result ^ int result ^
-^ floor | ''floor()'' | ''ifloor()'' |
+^ floor | ''fixed floor(fixed x)'' | ''int ifloor(fixed x)'' |
-^ ceil  | ''ceil()'' | ''iceil()'' |
+^ ceil  | ''fixed ceil(fixed x)''  | ''int iceil(fixed x)''  |
-^ round | ''round()'' | ''iround()'' |
+^ round | ''fixed round(fixed x)'' | ''int iround(fixed x)'' |
-^ trunc | ''trunc()'' | ''itrunc()'' |
+^ trunc | ''fixed trunc(fixed x)'' | ''int itrunc(fixed x)'' |
-Example of the difference between ''i'' and non-''i'' functions:
+<note important>Current GZDoom provides built-in functions [[zdoom>Floor_(ACS_function)|floor]], [[zdoom>ceil]] and [[zdoom>round]], but these functions are not available in Zandronum 3.0 and **silently return 0** as a result.
-  * ''floor(2.3) == 2.0;''
-  * ''ifloor(2.3) == 2;''
-So the full function list is as follows:
+</note>
-  * ''fixed floor(fixed x)''
-  * ''fixed ceil(fixed x)''
-  * ''fixed round(fixed x)''
-  * ''fixed trunc(fixed x)''
-  * ''int ifloor(fixed x)''
-  * ''int iceil(fixed x)''
-  * ''int iround(fixed x)''
-  * ''int itrunc(fixed x)''

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