fix utility function signature
fix utility function signature

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