Average Error: 5.3 → 1.6
Time: 4.0m
Precision: 64
Internal Precision: 384
\[\left(\left(\left(\left(\left(\left(x \cdot 18.0\right) \cdot y\right) \cdot z\right) \cdot t - \left(a \cdot 4.0\right) \cdot t\right) + b \cdot c\right) - \left(x \cdot 4.0\right) \cdot i\right) - \left(j \cdot 27.0\right) \cdot k\]
↓
\[\begin{array}{l} \mathbf{if}\;t \le -9.176554613360045 \cdot 10^{+52}:\\ \;\;\;\;\left(18.0 \cdot t\right) \cdot \left(x \cdot \left(y \cdot z\right)\right) - \left(\left(\left(27.0 \cdot k\right) \cdot j - c \cdot b\right) + \left(x \cdot i + t \cdot a\right) \cdot 4.0\right)\\ \mathbf{if}\;t \le 9.451961022961896 \cdot 10^{-45}:\\ \;\;\;\;\left(b \cdot c - 4.0 \cdot \left(x \cdot i + a \cdot t\right)\right) + \left(18.0 \cdot \left(z \cdot \left(y \cdot \left(t \cdot x\right)\right)\right) - 27.0 \cdot \left(k \cdot j\right)\right)\\ \mathbf{else}:\\ \;\;\;\;\left(18.0 \cdot t\right) \cdot \left(x \cdot \left(y \cdot z\right)\right) - \left(\left(\left(27.0 \cdot k\right) \cdot j - c \cdot b\right) + \left(x \cdot i + t \cdot a\right) \cdot 4.0\right)\\ \end{array}\]

Error

Bits error versus x

Bits error versus y

Bits error versus z

Bits error versus t

Bits error versus a

Bits error versus b

Bits error versus c

Bits error versus i

Bits error versus j

Bits error versus k

Derivation

  1. Split input into 2 regimes

  2. if t < -9.176554613360045e+52 or 9.451961022961896e-45 < t

    1. Initial program 1.8

      \[\left(\left(\left(\left(\left(\left(x \cdot 18.0\right) \cdot y\right) \cdot z\right) \cdot t - \left(a \cdot 4.0\right) \cdot t\right) + b \cdot c\right) - \left(x \cdot 4.0\right) \cdot i\right) - \left(j \cdot 27.0\right) \cdot k\]

    2. Applied simplify2.0

      \[\leadsto \color{blue}{\left(b \cdot c - 4.0 \cdot \left(x \cdot i + a \cdot t\right)\right) + \left(t \cdot \left(\left(18.0 \cdot x\right) \cdot \left(y \cdot z\right)\right) - 27.0 \cdot \left(k \cdot j\right)\right)}\]

    3. Taylor expanded around inf 8.8

      \[\leadsto \left(b \cdot c - 4.0 \cdot \left(x \cdot i + a \cdot t\right)\right) + \left(\color{blue}{18.0 \cdot \left(z \cdot \left(y \cdot \left(t \cdot x\right)\right)\right)} - 27.0 \cdot \left(k \cdot j\right)\right)\]

    4. Taylor expanded around inf 8.8

      \[\leadsto \color{blue}{\left(b \cdot c - \left(4.0 \cdot \left(i \cdot x\right) + 4.0 \cdot \left(t \cdot a\right)\right)\right)} + \left(18.0 \cdot \left(z \cdot \left(y \cdot \left(t \cdot x\right)\right)\right) - 27.0 \cdot \left(k \cdot j\right)\right)\]

    5. Applied simplify2.0

      \[\leadsto \color{blue}{\left(18.0 \cdot t\right) \cdot \left(x \cdot \left(y \cdot z\right)\right) - \left(\left(\left(27.0 \cdot k\right) \cdot j - c \cdot b\right) + \left(x \cdot i + t \cdot a\right) \cdot 4.0\right)}\]

    if -9.176554613360045e+52 < t < 9.451961022961896e-45

    1. Initial program 7.2

      \[\left(\left(\left(\left(\left(\left(x \cdot 18.0\right) \cdot y\right) \cdot z\right) \cdot t - \left(a \cdot 4.0\right) \cdot t\right) + b \cdot c\right) - \left(x \cdot 4.0\right) \cdot i\right) - \left(j \cdot 27.0\right) \cdot k\]

    2. Applied simplify8.1

      \[\leadsto \color{blue}{\left(b \cdot c - 4.0 \cdot \left(x \cdot i + a \cdot t\right)\right) + \left(t \cdot \left(\left(18.0 \cdot x\right) \cdot \left(y \cdot z\right)\right) - 27.0 \cdot \left(k \cdot j\right)\right)}\]

    3. Taylor expanded around inf 1.4

      \[\leadsto \left(b \cdot c - 4.0 \cdot \left(x \cdot i + a \cdot t\right)\right) + \left(\color{blue}{18.0 \cdot \left(z \cdot \left(y \cdot \left(t \cdot x\right)\right)\right)} - 27.0 \cdot \left(k \cdot j\right)\right)\]
  3. Recombined 2 regimes into one program.
  4. Removed slow pow expressions.

Runtime

Time bar (total: 4.0m)Debug logProfile

herbie shell --seed '#(1063154770 1824007522 645063331 41291047 494775821 1237684644)' 
(FPCore (x y z t a b c i j k)
  :name "Diagrams.Solve.Polynomial:cubForm  from diagrams-solve-0.1"
  (- (- (+ (- (* (* (* (* x 18.0) y) z) t) (* (* a 4.0) t)) (* b c)) (* (* x 4.0) i)) (* (* j 27.0) k)))