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

Overview of "s21_math.h" defines

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)

Build

Preparation

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

cd ./src

Build

• 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