# Exemples valides:
#    a       b       c  Discrimant     Racine_1       Racine_2    Commentaire
# ----  ------    ----   ---------   ----------   ------------    -----------
#    1      -1      -1    2.236068  -0.61803398      1.6180339    Nombre d'or
#    4     -12       9         0.0          1.5            1.5    Racine double
# -128   32767       1   32767.007    255.99221  -3.0517578E-5    Min/Max coeficients #1
#  127  -32768    -128   32768.992  -0.00390625      258.01965    Min/Max coeficients #2
#    6       5       1         1.0         -0.5    -0.33333334    2 racines negatives
#    1       0      -1   2.8284271   -1.4142135      1.4142135    Racines de (x^2 - 2) = 0 => +/-sqrt(2)
#   -1       0       4         4.0          2.0           -2.0    Racines de (-x^2 + 4) = 0 => +/-2
#    1   32767       1     32767.0     -32767.0            0.0    b >> a => ~(32767 x b + 1)
#    1       1    -128   22.649503   -11.824751      10.824751    x1 + x2 = -1 et x1 * x2 = -127.999985212

# Exemples non valides:
#    a       b     c    Discrimant     Racine_1       Racine_2    Commentaire
# ----  ------  ----     ---------  -----------  -------------    -----------
#    0       1     1           1.0    -Infinity            NaN    Division par 0 a cause de a = 0
#    0      -1     1           1.0          NaN       Infinity    Division par 0 a cause de a = 0
#    1       1     1           NaN          NaN            NaN    Discriminant negatif (pas de solutions reelles)