EDIT: Turns out that pre-standardized C is documented:
http://www.math.utah.edu/computing/compilers/c/Ritchie-CRefe...
Page 8 documents `=&`.
EDIT: Turns out that pre-standardized C is documented:
http://www.math.utah.edu/computing/compilers/c/Ritchie-CRefe...
Page 8 documents `=&`.