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c:math.h:ceil [2013/01/22 22:02] |
c:math.h:ceil [2024/02/16 01:05] (current) |
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+ | {{keywords>wiki library source code example reference}} | ||
+ | ====== ceil ====== | ||
+ | <code c> | ||
+ | double ceil(double); | ||
+ | </code> | ||
+ | rounding up floating point | ||
+ | |||
+ | ===== C Sourcecode Example ===== | ||
+ | |||
+ | compile in linux with: gcc ceil.c -o ceil **-lm** -Wall | ||
+ | <code c> | ||
+ | #include <stdio.h> /* including standard library */ | ||
+ | //#include <windows.h> /* uncomment this for Windows */ | ||
+ | |||
+ | #include <math.h> /* including math library */ | ||
+ | |||
+ | int main () | ||
+ | { | ||
+ | printf ("ceil from 4.2 is %f\n", ceil (4.2) ); | ||
+ | return 0; | ||
+ | } | ||
+ | </code> | ||
+ | ===== output ===== | ||
+ | |||
+ | output: | ||
+ | user@host:~$ ./ceil | ||
+ | ceil from 4.2 is 5.000000 | ||
+ |