text: #ifndef ALAPHAS_C_H_
  #define ALAPHAS_C_H_
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  typedef struct CAlphaS CAlphaS;
  
  CAlphaS *mkAlphaS(double mt, double mz, double alpha);
  
  double alphasQ(CAlphaS *as, double q);
  
  #ifdef __cplusplus
  }
  #endif
  
  #endif  // ALAPHAS_C_H_
  