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| author | mid-kid <esteve.varela@gmail.com> | 2018-03-25 18:24:14 +0200 |
|---|---|---|
| committer | mid-kid <esteve.varela@gmail.com> | 2018-03-25 18:24:14 +0200 |
| commit | be76ee56a89e72c0b87a605321bb1670e86f8220 (patch) | |
| tree | 277ffa2bc094e74b27ec5b72f748b93e58b3437f /engine/routines/getsquareroot.asm | |
| parent | 0d9241889fc8a2f047b9fd6db25e55de1e721877 (diff) | |
Organize the engine/ directory, director's cut
Cleaned up `engine/routines`, in favor of moving files into more
appropriate directories. predef-related routines are now in top-level
`engine`.
`rtc/delete_save_change_clock.asm` has been split into both
`menus/delete_save.asm` and `rtc/reset_password.asm`.
Made a new subdirectory:
* engine/math: Contains all generic math-related routines.
Diffstat (limited to 'engine/routines/getsquareroot.asm')
| -rw-r--r-- | engine/routines/getsquareroot.asm | 32 |
1 files changed, 0 insertions, 32 deletions
diff --git a/engine/routines/getsquareroot.asm b/engine/routines/getsquareroot.asm deleted file mode 100644 index 412fd04ff..000000000 --- a/engine/routines/getsquareroot.asm +++ /dev/null @@ -1,32 +0,0 @@ -NUM_SQUARE_ROOTS EQU 255 - -GetSquareRoot: ; 13b87 -; Return the square root of de in b. - -; Rather than calculating the result, we take the index of the -; first value in a table of squares that isn't lower than de. - - ld hl, .Squares - ld b, 0 -.loop -; Make sure we don't go past the end of the table. - inc b - ld a, b - cp NUM_SQUARE_ROOTS - ret z - -; Iterate over the table until b**2 >= de. - ld a, [hli] - sub e - ld a, [hli] - sbc d - - jr c, .loop - ret - -.Squares: ; 13b98 -x = 1 -rept NUM_SQUARE_ROOTS - dw x * x -x = x + 1 -endr |