On Tue, Oct 22, 2024, at 3:02 PM, Schmitt, Michael wrote: > > So either you need to scan the string first to find its length and then move > for that length, or scan and move one byte at a time like the code generated > by the C compiler. >
If you are coding in Assembler, that's correct. Write a macro? In C (or some HLL), you use strncpy and don't worry about it. Be careful If you are making a performance statement about the cost of a loop. Instructions are translated to microcode for execution. You might have a single instruction that does something but the microcode might scan and move one byte at a time anyway. In theory, translation heuristics might even recognize the "strncpy" loop of instructions and generate microcode that uses "strncpy" function in the underlying engine. Kirk Wolf Dovetailed Technologies ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
