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Test "Forensics" |
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L'algorithme "forensics" (médecine légale) a été inventé par Mike Sebastian pour fournir rapidement une comparaison de la précision des calculatrices scientifiques.
Il s'agit d'appliquer le calcul suivant et d'observer le résultat obtenu :
arcsin(arccos(arctan(tan(cos(sin(9))))))
(Voir "Calculator Forensics" de Mike Sebastian)
Mais... la précision du calcul (nombre de décimale après la virgule) influencera le résultat final...
Exemple, avec 33 décimales :
| 9 |
| SIN | 0.15643446504023086901010531946717 |
| COS | 0.99999627274288502411751620501135 |
| TAN | 0.017454999855488660791394140928348 |
| ATAN | 0.99999627274288502411751620501135 |
| ACOS | 0.15643446504023086901010531946717 |
| ASIN | 9 |
J'ai donc utilisé cette simple formule pour tester chaque calculatrice en ma possession.
Mais pour faire mes premiers pas de programmation sur la plupart d'entre elles, j'ai décidé de saisir la séquence arcsin(arccos(arctan(tan(cos(sin(9)))))) sous forme de programme.
Sur chaque calculatrice il faut choisir le mode "Degré" puis lancer le programme avec RST suivi de R/S. Sauf pour les calculatrices qui peuvent utiliser des touches de lancement de programme. (TI-58C, TI-59, TI-66, TI-95, TI-65)
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Les programmes |
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SR-52 |  |
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SR-56 |  |
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TI-53 |  |
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TI-53slanted |  |
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TI-55 |  |
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TI-55II |  |
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TI-55III |  |
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TI-56 |  |
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TI-57 |  |
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TI-57II |  |
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TI-57LCD |  |
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TI-58C |  |
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TI-59 |  |
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TI-60 |  |
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TI-60X |  |
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TI-62 |  |
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TI-65 |  |
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TI-66 |  |
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TI-67 |  |
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TI-68 |  |
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TI-73explorer |  |
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TI-76fr |  |
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TI-80 |  |
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TI-81 |  |
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TI-82 |  |
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TI-82Advanced |  |
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TI-82Plus |  |
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TI-82Stats |  |
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TI-82statsfr |  |
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TI-83 |  |
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TI-83Plus |  |
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TI-83PlusSE |  |
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TI-83PremiumCE |  |
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TI-83plusfr |  |
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TI-84PlusCE |  |
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TI-84PlusCE-T |  |
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TI-84PlusCSE |  |
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TI-84PlusSE |  |
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TI-84PlusT |  |
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TI-84plus |  |
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TI-84pocketfr |  |
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TI-85 |  |
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TI-86 |  |
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TI-89 |  |
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TI-89titanium |  |
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TI-92 |  |
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TI-95 |  |
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TI-nspire |  |
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TI-nspireCAS |  |
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TI-nspireCX |  |
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TI-nspireCXCAS |  |
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TI-nspireCXII-T |  |
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TI-nspireCXII-TCAS |  |
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TI-nspireCXIICAS |  |
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Voyage-200 |  |
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HP-10C |  |
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HP-11C |  |
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HP-15C |  |
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HP-20S |  |
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HP-21S |  |
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HP-25 |  |
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HP-28C |  |
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HP-28S |  |
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HP-29C |  |
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HP-30B |  |
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HP-30S |  |
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HP-32S |  |
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HP-32SII |  |
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HP-33E |  |
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HP-33S |  |
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HP-34C |  |
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HP-35S |  |
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HP-38G |  |
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HP-39G |  |
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HP-39GII |  |
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HP-39GS |  |
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HP-39Gplus |  |
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HP-40G |  |
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HP-40GS |  |
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HP-41C |  |
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HP-42S |  |
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HP-48G |  |
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HP-48GII |  |
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HP-48GX |  |
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HP-48S |  |
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HP-48SX |  |
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HP-49G |  |
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HP-49Gplus |  |
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HP-50G |  |
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HP-55 |  |
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HP-97 |  |
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HP-9G |  |
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HP-Prime |  |
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PX15C |  |
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PX41C |  |
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PX41CX |  |
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WP-34S |  |
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DM42 |  |
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Les résultats |
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| Calculatrice | Affiché | Interne |
| SR-52 | 9.000004661 | 9.00000466131 |
 TI-58C | 9.000004661 | 9.000004661314 |
 TI-58 | 9.000004661 | 9.000004661314 |
| TI-59 | 9.000004661 | 9.000004661314 |
| TI-66 | 9.000002295 | 9.000002294775 |
| TI-95 | 8.999999738 | 8.999999738296 |
| SR-56 | 9.000004661 | 9.00000466131 |
| TI-57 | 9.0047464 | 9.0047463834 |
| EC-4000 | 9.0047464 | 9.0047463834 |
| TI-57 LCD | 9.1146406 | 9.114640577 |
| TI-57 II | 9.1146406 | 9.114640577 |
| TI-62 Galaxy | 9.00044229369 | 9.00044229369 |
 The MBA | (*) | (*) |
 TI-42 MBA | (*) | (*) |
 BA-55 | (*) | (*) |
 BA-54 | (*) | (*) |
| TI-55 | 9.0077265 | 9.007726486 |
| TI-55 II | 9.1146406 | 9.114640577 |
| TI-55 III | 9.1770871 | 9.177087088 |
| TI-53 slimline | 9.1770871 | 9.177087088 |
| TI-53 slanted | 9.1146406 | 9.114640577 |
| TI-56 | 9.11464058 | 9.114640577 |
| TI-65 | 9.000442294 | 9.00044229369 |
| TI-68 | 8.999999008 | 8.999999007884 |
| TI-60 | 9.000442294 | 9.00044229369 |
| TI-60X | 8.999999008 | 8.999999008 |
| TI-67 Galaxy | 8.999999008 | 8.999999007884 |
| TI-73 Explorer | 8.99999997 | 8.9999999695957 |
| TI-76 .fr | 8.99999997 | 8.9999999695957 |
| TI-80 | 8.999999008 | 8.999999007884 |
| TI-81 | 8.999999617 | 8.9999999616566 |
| TI-82 | 8.99999997 | 8.9999999695957 |
 TI-82 Stats.fr | 8.99999997 | 8.9999999695957 |
| TI-82 Stats | 8.99999997 | 8.9999999695957 |
 TI-82 Plus | 8.99999997 | 8.9999999695957 |
| TI-82 Advanced | 8.99999997 | 8.9999999695957 |
| TI-83 | 8.99999997 | 8.9999999695957 |
| TI-83 Plus.fr | 8.99999997 | 8.9999999695957 |
 TI-83 Plus | 8.99999997 | 8.9999999695957 |
| TI-83 Plus SE | 8.99999997 | 8.9999999695957 |
| TI-84 Plus | 8.99999997 | 8.9999999695957 |
 TI-84 Plus T | 8.99999997 | 8.9999999695957 |
 TI-84 Plus SE | 8.99999997 | 8.9999999695957 |
| TI-84 Plus C SE | 8.99999997 | 8.9999999695957 |
| TI-84 Pocket.fr | 8.99999997 | 8.9999999695957 |
| TI-85 | 8.9999999696 | 8.9999999695957 |
| TI-86 | 8.9999999696 | 8.9999999695957 |
| TI-89 | 8.99999998177 | 8.9999999817692 |
| TI-89 Titanium | 8.99999998177 | 8.9999999817692 |
| TI-92 | 8.99999998177 | 8.999999981769 |
| Voyage 200 | 8.99999998177 | 8.9999999817692 |
| TI-nspire | 8.99999998177 | 8.9999999817691 |
| TI-nspire CAS | 8.99999998177 | 8.9999999817691 |
| TI-nspire CX | 8.99999998177 | 8.9999999817691 |
| TI-nspire CX CAS | 8.99999998177 | 8.9999999817691 |
| TI-nspire CX II-T | 8.99999998177 | 8.9999999817691 |
| TI-nspire CX II-T CAS | 8.99999998177 | 8.9999999817691 |
| TI-83 PremiumCE | 8.99999997 | 8.9999999695957 |
| TI-84 Plus CE-T | 8.99999997 | 8.9999999695957 |
| HP 9G | 9. | 9. |
| HP-20S | 8.99999864267 | 8.99999864267 |
| HP-21S | 8.99999864267 | 8.99999864267 |
| HP-30b | 8.99999864267 | 8.99999864267 |
| HP 30S | 9. | 9. |
| HP-32S | 8.99999864267 | 8.99999864267 |
| HP-32S II | 8.99999864267 | 8.99999864267 |
| HP-33S | 8.99999986001 | 8.99999986001 |
| HP-35S | 8.99999986001 | 8.99999986001 |
| HP 38G | 8.99999864267 | 8.99999864267 |
| HP 39G | 8.99999864267 | 8.99999864267 |
| HP 39G+ | 8.99999864267 | 8.99999864267 |
| HP-39G II | 8.99999864267 | 8.99999864267 |
| HP 39GS | 8.99999864267 | 8.99999864267 |
| HP 40G | 8.99999864267 | 8.99999864267 |
| HP 40GS | 8.99999864267 | 8.99999864267 |
| HP 11C | 9.000417403 | 9.000417403 |
 HP-12C | (*) | (*) |
 HP-12C Platinum | (*) | (*) |
 HP-12C P. Silver | (*) | (*) |
| HP-15C | 9.9000417403 | 9.9000417403 |
| HP 25 | 9.004076649 | 9.004076649 |
| HP 33E | 9.000417403 | 9.000417403 |
| HP 34C | 9.000417403 | 9.000417403 |
| HP 55 | 9.004076898 | 9.004076898 |
| HP 28S | 8.99999864267 | 8.99999864267 |
| HP 28C | 8.99999864267 | 8.99999864267 |
| HP-41C | 9.9000417403 | 9.9000417403 |
| HP-42S | 8.99999864267 | 8.99999864267 |
| HP 48SX | 8.99999864267 | 8.99999864267 |
| HP 48S | 8.99999864267 | 8.99999864267 |
| HP 48G | 8.99999864267 | 8.99999864267 |
| HP-49G | 8.99999864267 | 8.99999864267 |
| HP 49G+ | 8.99999864267 | 8.99999864267 |
| HP 50G | 8.99999864267 | 8.99999864267 |
| HP Prime | 8.99999864267 | 8.99999864267 |
| WP 34S | 9.00000000003 | 9.000000000029361 |
| PX15C | 9.000417403 | 9.000417403 |
| PX41C | 9.000417403 | 9.000417403 |
| DM42 | 9.00000000000 | 8.999999999999999999999999999937534 |
(Voir Résultats par Circuits Intégrés de DATAMATH)
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(*) Les calculatrices The MBA, BA-55, BA-54... n'ont pu faire l'objet de ce test en raison de l'absence de fonctions trigonométriques (Sin, Cos, Tan) sur ces machines.
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