cmath库常用函数（转载）_devcmath函数库

using ::abs; //绝对值
2
3using ::acos; //反余弦
4
5using ::acosf; //反余弦
6
7using ::acosl; //反余弦
8
9using ::asin; //反正弦
10
11using ::asinf; //反正弦
12
13using ::asinl; //反正弦
14
15using ::atan; //反正切
16
17using ::atan2; //y/x的反正切
18
19using ::atan2f; //y/x的反正切
20
21using ::atan2l; //y/x的反正切
22
23using ::atanf; //反正切
24
25using ::atanl; //反正切
26
27using ::ceil; //上取整
28
29using ::ceilf; //上取整
30
31using ::ceill; //上取整
32
33using ::cos; //余弦
34
35using ::cosf; //余弦
36
37using ::cosh; //双曲余弦
38
39using ::coshf; //双曲余弦
40
41using ::coshl; //双曲余弦
42
43using ::cosl; //余弦
44
45using ::exp; //指数值
46
47using ::expf; //指数值
48
49using ::expl; //指数值
50
51using ::fabs; //绝对值
52
53using ::fabsf; //绝对值
54
55using ::fabsl; //绝对值
56
57using ::floor; //下取整
58
59using ::floorf; //下取整
60
61using ::floorl; //下取整
62
63using ::fmod; //求余
64
65using ::fmodf; //求余
66
67using ::fmodl; //求余
68
69using ::frexp; //返回value=x*2n中x的值,n存贮在eptr中
70
71using ::frexpf; //返回value=x*2n中x的值,n存贮在eptr中
72
73using ::frexpl; //返回value=x*2n中x的值,n存贮在eptr中
74
75using ::ldexp; //返回value*2exp的值
76
77using ::ldexpf; //返回value*2exp的值
78
79using ::ldexpl; //返回value*2exp的值
80
81using ::log; //对数
82
83using ::log10; //对数
84
85using ::log10f; //对数
86
87using ::log10l; //对数
88
89using ::logf; //对数
90
91using ::logl; //对数
92
93using ::modf; //将双精度数value分解成尾数和阶
94
95using ::modff; //将双精度数value分解成尾数和阶
96
97using ::modfl; //将双精度数value分解成尾数和阶
98
99using ::pow; //计算幂
100
101using ::powf; //计算幂
102
103using ::powl; //计算幂
104
105using ::sin; //正弦
106
107using ::sinf; //正弦
108
109using ::sinh; //双曲正弦
110
111using ::sinhf; //双曲正弦
112
113using ::sinhl; //双曲正弦
114
115using ::sinl; //正弦
116
117using ::sqrt; //开方
118
119using ::sqrtf; //开方
120
121using ::sqrtl; //开方
122
123using ::tan; //正切
124
125using ::tanf; //正切
126
127using ::tanh; //双曲正切
128
129using ::tanhf; //双曲正切
130
131using ::tanhl; //双曲正切
132
133using ::tanl; //正切