Define unrolled_for

• Defined in File t8_unrolled_for.hxx

Define Documentation

unrolled_for(FIRST, LAST, ITER, BODY)

Implementation of a compile-time unrolled for.

Has 0 runtime overhead compared to normal loops. Index can be used in compile-time contexts like array length or template arguments.

Usage: int x = 1 unrolled_for (0, 3, loop_index, { do_something<loop_index>(x); });

expands to:

do_something<0>(x); do_something<1>(x); do_something<2>(x);

Parameters:

• FIRST – [in] Starting variable, has to be an integer.

• LAST – [in] Ending variable, has to be an integer (last iteration is ITER < LAST).

• ITER – [inout] Loop index.

• BODY – [in] The loop body.