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Duff realized that to handle cases where count is not divisible by eight, the assembly programmer's technique of jumping into the loop body could be implemented by interlacing the structures of a switch statement and a loop, putting the switch's case labels at the points of the loop body that correspond to the remainder of count/8: [1]
This is a non-exhaustive list of Arduino boards and compatible systems. It lists boards in these categories: Released under the official Arduino name; Arduino "shield" compatible; Development-environment compatible; Based on non-Atmel processors; Where different from the Arduino base feature set, compatibility, features, and licensing details ...
Loop unrolling, also known as loop unwinding, is a loop transformation technique that attempts to optimize a program's execution speed at the expense of its binary size, which is an approach known as space–time tradeoff.
Arduino (/ ɑː r ˈ d w iː n oʊ /) is an Italian open-source hardware and software company, project, and user community that designs and manufactures single-board microcontrollers and microcontroller kits for building digital devices.
Union-find essentially stores labels which correspond to the same blob in a disjoint-set data structure, making it easy to remember the equivalence of two labels by the use of an interface method E.g.: findSet(l). findSet(l) returns the minimum label value that is equivalent to the function argument 'l'.
This pointer function method can result in saving one machine instruction, and avoids the indirect jump (to one of the branch instructions). The resulting list of pointers to functions is almost identical to direct threaded code, and is conceptually similar to a control table. The actual method used to implement a branch table is usually based on:
The methods to program AVR chips varies from AVR family to family. Most of the methods described below use the RESET line to enter programming mode. In order to avoid the chip accidentally entering such mode, it is advised to connect a pull-up resistor between the RESET pin and the positive power supply.
In Fortran, a computed GOTO jumps to one of several labels in a list, based on the value of an expression. An example is goto (20,30,40) i . [ 44 ] The equivalent construct in C is the switch statement , and in newer Fortran a SELECT CASE construct is the recommended syntactical alternative. [ 45 ]