axle OS
x86_32 UNIX-like hobby OS
math.h
1 #ifndef STD_MATH_H
2 #define STD_MATH_H
3 
4 #include <stdint.h>
5 #include "std_base.h"
6 #include "sincostan.h"
7 
8 __BEGIN_DECLS
9 
10 #define CMP(op, a, b) ({ \
11  __typeof__(a) _a = (a); \
12  __typeof__(b) _b = (b); \
13  (_a op _b) ? _a : _b; \
14 })
15 #define MIN(a, b) CMP(<=, a, b)
16 #define MAX(a, b) CMP(>, a, b)
17 
18 #define abs(val) ((val) < 0) ? -(val) : (val)
19 
20 #define M_PI 3.1415926536
21 #define M_E 2.7182818285
22 
23 STDAPI double pow(double x, double pow);
24 STDAPI unsigned long factorial(unsigned long x);
25 
26 //trigonometric functions
27 STDAPI double cot(double val);
28 STDAPI double sec(double val);
29 STDAPI double csc(double val);
30 STDAPI double exp(double x);
31 
32 //hyperbolic functions
33 STDAPI double sinh(double val);
34 STDAPI double cosh(double val);
35 STDAPI double tanh(double val);
36 STDAPI double coth(double val);
37 STDAPI double sech(double val);
38 STDAPI double csch(double val);
39 
40 //inverse trigonometric functions
41 STDAPI double arcsin(double val);
42 STDAPI double arccos(double val);
43 STDAPI double arctan(double val);
44 STDAPI double arccot(double val);
45 STDAPI double arcsec(double val);
46 STDAPI double arccsc(double val);
47 STDAPI double atan2(double y, double x);
48 
49 STDAPI float sqrt(const float x);
50 STDAPI int round(double x);
51 STDAPI double floor(double x);
52 
53 #define RAND_MAX 32767
54 STDAPI uint32_t rand();
55 STDAPI void srand(unsigned int seed);
56 
57 //linear interpolation
58 STDAPI float lerp(float a, float b, float c);
59 
60 double log10(double x);
61 double ln(double x);
62 
63 __END_DECLS
64 
65 #endif // STD_MATH_H
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