/ Usage / / tolower(c); / int c; / / Description / / If c is a upper-case alphabetic, return it's lower-case / equivalent. Otherwise, return c. / / Bugs / / .globl tolower tolower: mov 2(sp),r0 cmp r0,$'A blo 0f cmp r0,$'Z bhi 0f bis $040,r0 0: return