MPQC  2.3.1
math.h
1 
2 #ifndef _util_misc_math_h
3 #define _util_misc_math_h
4 
5 #include <math.h>
6 
7 #ifndef M_PI
8 # define M_PI 3.14159265358979323846 /* pi */
9 #endif
10 
11 #ifndef M_LN2
12 # define M_LN2 0.69314718055994530942 /* log_e 2 */
13 #endif
14 
15 #ifndef M_PI_2
16 # define M_PI_2 1.57079632679489661923 /* pi/2 */
17 #endif
18 
19 #endif

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