s21_math

Implementation of our own version of the math.h library.

Overview of "s21_math.h" functions

No.	Function	Description
1	`int s21_abs(int x)`	Computes absolute value of an integer value
2	`long double s21_acos(double x)`	Computes arc cosine
3	`long double s21_asin(double x)`	Computes arc sine
4	`long double s21_atan(double x)`	Computes arc tangent
5	`long double s21_ceil(double x)`	Returns the nearest integer not less than the given value
6	`long double s21_cos(double x)`	Computes cosine
7	`long double s21_exp(double x)`	Returns e raised to the given power
8	`long double s21_fabs(double x)`	Computes absolute value of a floating-point value
9	`long double s21_floor(double x)`	Returns the nearest integer not greater than the given value
10	`long double s21_fmod(double x, double y)`	Remainder of the floating-point division operation
11	`long double s21_fuctorial(long long int x)`	Computes factorial of x.
12	`long double s21_log(double x)`	Computes natural logarithm
13	`long double s21_pow_int(double base, long long int exp)`	Raises a number to the given power.
14	`long double s21_pow(double base, double exp)`	Raises a number to the given power
15	`long double s21_sin(double x)`	Computes sine
16	`long double s21_sqrt(double x)`	Computes square root
17	`long double s21_tan(double x)`	Computes tangent

No.	Function	Description
1	`S21_PI`	PI number
2	`S21_NAN`	Implementation of nan
3	`S21_INF_POS`	Positive infinity
4	`S21_INF_NEG`	Negative infinity
5	`S21_LN2`	Value of natural logarithm of 2
6	`S21_E`	Euler’s Number
7	`S21_IS_NAN(x)`	Expands to (x != x)
8	`S21_IS_INF(x)`	Expands to (x == S21_INF_NEG \|\| x == S21_INF_POS)

To start build you need to move to ./src dir.

cd ./src

Build static lib s21_math.a into ./build dir
```
make all
```
or
```
make s21_math.a
```
Build and run tests for lib
```
make test
```
Generate lib code coverage by tests into ./src/report dir
```
make gcov_report
```
Clean project
```
make clean
```