double f(double c_p, double c_n, double t, double s) {
double r149055 = 1.0;
double r149056 = s;
double r149057 = -r149056;
double r149058 = exp(r149057);
double r149059 = r149055 + r149058;
double r149060 = r149055 / r149059;
double r149061 = c_p;
double r149062 = pow(r149060, r149061);
double r149063 = r149055 - r149060;
double r149064 = c_n;
double r149065 = pow(r149063, r149064);
double r149066 = r149062 * r149065;
double r149067 = t;
double r149068 = -r149067;
double r149069 = exp(r149068);
double r149070 = r149055 + r149069;
double r149071 = r149055 / r149070;
double r149072 = pow(r149071, r149061);
double r149073 = r149055 - r149071;
double r149074 = pow(r149073, r149064);
double r149075 = r149072 * r149074;
double r149076 = r149066 / r149075;
return r149076;
}