ceil

ceil

Round Up a Floating-Point Number

Portability: ISO/ANSI C conforming, UNIX compatible

SYNOPSIS
DESCRIPTION
RETURN VALUE
IMPLEMENTATION
EXAMPLE
RELATED FUNCTIONS
SEE ALSO

SYNOPSIS

#include <math.h>

double ceil(double y);

DESCRIPTION

ceil rounds up a real number to the next larger integral real number.

RETURN VALUE

ceil accepts a floating-point argument y and rounds it up to the next larger integer, expressed as a floating-point number.

IMPLEMENTATION

ceil is implemented by a built-in function unless it is undefined by an #undef statement.

EXAMPLE

#include <math.h>
#include <stdio.h>

int moda, modb, df;
double score, rank;

main()
{
   puts("Enter two integers: ");
   scanf("%d %d", &moda, &modb);
   puts("Enter an integer divisor: ");
   scanf("%d",&df);

      /* Add the two numbers, divide by the given divisor, and */
      /*  then round up to the closest integer greater than    */
      /*  the result.                                          */
   score = (moda + modb);
   score /= df;
   rank = ceil(score);

      /* Print this rounded result (its "ceil"ed value).       */
   printf("The ceiling of (%d + %d)/ %d = %f\n",moda,modb,df,rank);
}

RELATED FUNCTIONS

floor

SEE ALSO

Mathematical Functions

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