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Math.h
- header file containing the most usual math functions:
- must use: #include <math.h>
- There are trigonometric functions:
| function |
for any float value x ... |
- sin(x)
- cos(x)
- tan(x)
- asin(x)
- acos(x)
- atan(x)
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- returns the sine of arc x.
- returns the cosine of arc x.
- returns the tangent of arc x.
- returns the arc sine x.
- returns the arc cosine x.
- returns the arc tangent x.
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There are also exponential functions
| exp(x) |
returns the exponential ex. |
| log(x) |
returns the natural (base e) logarithm of x. |
| log10(x) |
returns the decimal logarithm of x. |
Also the functions:
| sqrt(x) |
returns the square root of x. |
| fabs(x) |
returns the absolute value of x. |
| ceil(x) |
returns the round up value of x. |
| floor(x) |
returns the round down value of x. |
| rand() |
returns a random (well, almost) integer |
example: square root
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