improve C code readability
improve C code readability

ChristopherHogan/cython,cython/cython,da-woods/cython,larsmans/cython,slonik-az/cython,JelleZijlstra/cython,ABcDexter/cython,andreasvc/cython,larsmans/cython,dahebolangkuan/cython,madjar/cython,ABcDexter/cython,mrGeen/cython,mcanthony/cython,roxyboy/cython,JelleZijlstra/cython,ChristopherHogan/cython,da-woods/cython,madjar/cython,ABcDexter/cython,rguillebert/CythonCTypesBackend,hhsprings/cython,c-blake/cython,larsmans/cython,c-blake/cython,acrispin/cython,da-woods/cython,marscher/cython,fabianrost84/cython,mcanthony/cython,hhsprings/cython,acrispin/cython,slonik-az/cython,c-blake/cython,hickford/cython,fperez/cython,marscher/cython,marscher/cython,JelleZijlstra/cython,hhsprings/cython,fabianrost84/cython,encukou/cython,fabianrost84/cython,mrGeen/cython,madjar/cython,scoder/cython,scoder/cython,rguillebert/CythonCTypesBackend,encukou/cython,larsmans/cython,ChristopherHogan/cython,madjar/cython,mrGeen/cython,scoder/cython,roxyboy/cython,achernet/cython,achernet/cython,mrGeen/cython,hhsprings/cython,encukou/cython,mrGeen/cython,hickford/cython,fabianrost84/cython,dahebolangkuan/cython,mcanthony/cython,larsmans/cython,andreasvc/cython,roxyboy/cython,mcanthony/cython,slonik-az/cython,rguillebert/CythonCTypesBackend,dahebolangkuan/cython,hickford/cython,roxyboy/cython,cython/cython,encukou/cython,achernet/cython,acrispin/cython,marscher/cython,fperez/cython,hhsprings/cython,rguillebert/CythonCTypesBackend,andreasvc/cython,dahebolangkuan/cython,c-blake/cython,mcanthony/cython,andreasvc/cython,roxyboy/cython,scoder/cython,ABcDexter/cython,cython/cython,fabianrost84/cython,slonik-az/cython,cython/cython,JelleZijlstra/cython,hickford/cython,acrispin/cython,fperez/cython,marscher/cython,achernet/cython,fperez/cython,slonik-az/cython,ABcDexter/cython,dahebolangkuan/cython,da-woods/cython,achernet/cython,hickford/cython,acrispin/cython,fperez/cython,andreasvc/cython,encukou/cython,c-blake/cython,madjar/cython,JelleZijlstra/cython