41 static ETL_CONSTANT
double pi = 3.14159265358979;
42 static ETL_CONSTANT
double pi_reciprocal = 0.31830988618379;
43 static ETL_CONSTANT
double pi_squared = 9.86960440108936;
44 static ETL_CONSTANT
double e = 2.71828182845905;
45 static ETL_CONSTANT
double e_reciprocal = 0.36787944117144;
46 static ETL_CONSTANT
double e_squared = 7.38905609893065;
47 static ETL_CONSTANT
double root2 = 1.41421356237310;
48 static ETL_CONSTANT
double root2_reciprocal = 0.70710678118655;
49 static ETL_CONSTANT
double euler = 0.57721566490153;
50 static ETL_CONSTANT
double golden_ratio = 1.61803398874989;