<math.h> main functions

<math.h> main functions

1. Absolute value

   • Actually, there si a functon similar to fabs in &lt;stlib&gt; calle abs but he difference between is that abs works with numbers of type int, meanwhile fabs works with double.
   • fabs : this function is the absolute value in math language. BTW, this function only works for numbers of type double.

2. Rounding numbers

   • ceil : this function rounds decimal numbers, it goes t to the biggest and nearest number. For example, 17.45 will be 18.
   • floor : this function also rounds decimal numbers, but it rounds to the smallest nearest number. For example, 18.69 will 18.

3. Power

   • pow : it is power, you should indicate two value, one for the base and the other for the exponent

4. Root

   • sqrt : it gives the square root of a number. The output is always a number of type double.

5. exp : exponentiel of a number. out and input: double

6. log which means ln

7. log10

   • logarithme de base 10

8. They written the same way, and also their output is a number of type double, tht means their input is double

   • asin, acos, atan
   • sin, cos, tan