math.h ceil problem

//c program

#include <msp430.h>
#include <math.h>

void main(void)
{
    unsigned int i = ceil(12/5);

    P1DIR = i;
}

/////output

    .file    "prog1.c"
    .arch msp430g2553
    .cpu 430
    .mpy none

    .section    .init9,"ax",@progbits
    .p2align 1,0
.global    main
    .type    main,@function
/***********************
 * Function `main'
 ***********************/
main:
    mov.b    #2, &__P1DIR
.LIRD0:
.Lfe1:
    .size    main,.Lfe1-main
;; End of function

////makefile
PREFIX=msp430-

MCU=msp430g2553

# c compiler
CC=$(PREFIX)gcc
CFLAGS=-O2 -mmcu=$(MCU)

all:
    $(CC) $(CFLAGS) -save-temps -o prog1.elf    prog1.c



i was expecting ceil(12/5) = 3 not 2.

-- 
*Kuldeep Singh Dhaka*
Sakul
+91-8791676237
[email protected]
Programmer, Open Source, Web Developer, System Administrator, Entrepreneur,
Animal Lover, Student, Reverse Engineer, Embedded System, Learning.

Bitcoins Accepted.
My GnuPG Public
Key<http://pgp.mit.edu:11371/pks/lookup?op=get&fingerprint=on&search=0x23816C5609DC7E26>
Fork Me <https://github.com/kuldeepdhaka>

------------------------------------------------------------------------------
This SF.net email is sponsored by Windows:

Build for Windows Store.

http://p.sf.net/sfu/windows-dev2dev

_______________________________________________
Mspgcc-users mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/mspgcc-users