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Feat(Core): Multiply for monome is done

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This commit is contained in:
Bertrand Benjamin 2018-11-23 11:24:33 +01:00
parent 95634d366b
commit 2176cc65df
1 changed files with 171 additions and 7 deletions
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178
mapytex/calculus/core/compute/multiply.py
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@ -15,7 +15,6 @@ from ..tree import Tree
from ..MO.mo import MO, MOnumber, MOstr
from ..MO.fraction import MOFraction
from ..MO.monomial import MOstrPower, MOMonomial
from .exceptions import MultiplyError
from .filters import special_case
multiply_doc = """ Multiply MOs
@ -201,10 +200,10 @@ def mostr_mostrpower(left, right):
>>> multiply(a, b)
Traceback (most recent call last):
...
mapytex.calculus.core.compute.exceptions.MultiplyError: Can't multiply MOstr and MOstrPower if they don'thave same variable (got x and y)
NotImplementedError: Can't multiply MOstr and MOstrPower if they don'thave same variable (got x and y)
"""
if left.variable != right.variable:
raise MultiplyError("Can't multiply MOstr and MOstrPower if they don't"
raise NotImplementedError("Can't multiply MOstr and MOstrPower if they don't"
f"have same variable (got {left.variable} and {right.variable})")
return MOstrPower(left.variable, right.power.value+1)
@ -222,13 +221,35 @@ def mostr_mostrpower(left, right):
>>> multiply(a, b)
Traceback (most recent call last):
...
mapytex.calculus.core.compute.exceptions.MultiplyError: Can't multiply MOstr and MOstrPower if they don'thave same variable (got x and y)
NotImplementedError: Can't multiply MOstr and MOstrPower if they don'thave same variable (got x and y)
"""
if left.variable != right.variable:
raise MultiplyError("Can't multiply MOstr and MOstrPower if they don't"
raise NotImplementedError("Can't multiply MOstr and MOstrPower if they don't"
f"have same variable (got {left.variable} and {right.variable})")
return MOstrPower(left.variable, left.power.value+1)
@multiply.register(MOstr, MOstr)
@special_case(multiply_filter)
def mostr_mostr(left, right):
""" Multiply a MOstr and a MOstr
:example:
>>> a = MOstr('x')
>>> b = MOstr('x')
>>> multiply(a, b)
<MOstrPower x^2>
>>> a = MOstr('y')
>>> b = MOstr('x')
>>> multiply(a, b)
Traceback (most recent call last):
...
NotImplementedError: Can't multiply MOstr and MOstr if they don'thave same variable (got y and x)
"""
if left.variable != right.variable:
raise NotImplementedError("Can't multiply MOstr and MOstr if they don't"
f"have same variable (got {left.variable} and {right.variable})")
return MOstrPower(left.variable, 2)
@multiply.register(MOstrPower, MOstrPower)
@special_case(multiply_filter)
def mostr_mostrpower(left, right):
@ -247,14 +268,157 @@ def mostr_mostrpower(left, right):
>>> multiply(a, b)
Traceback (most recent call last):
...
mapytex.calculus.core.compute.exceptions.MultiplyError: Can't multiply MOstr and MOstrPower if they don'thave same variable (got x and y)
NotImplementedError: Can't multiply MOstrPower and MOstrPower if they don'thave same variable (got x and y)
"""
if left.variable != right.variable:
raise MultiplyError("Can't multiply MOstr and MOstrPower if they don't"
raise NotImplementedError("Can't multiply MOstrPower and MOstrPower if they don't"
f"have same variable (got {left.variable} and {right.variable})")
power = Tree("+", left.power, right.power)
return Tree("^", left.variable, power)
@multiply.register(MOstrPower, MOMonomial)
@special_case(multiply_filter)
def mostr_momonomial(left, right):
""" Multiply a MOstrPower and a MOMonomial
>>> a = MOstrPower('x', 2)
>>> b = MOMonomial(2, 'x', 4)
>>> print(multiply(a, b))
*
> 2
> ^
| > x
| > +
| | > 2
| | > 4
>>> a = MOstrPower('x', 2)
>>> b = MOMonomial(2, 'y', 4)
>>> multiply(a, b)
Traceback (most recent call last):
...
NotImplementedError: Can't multiply MOstrPower and Monomial if they don'thave same variable (got x and y)
"""
if left.variable != right.variable:
raise NotImplementedError("Can't multiply MOstrPower and Monomial if they don't"
f"have same variable (got {left.variable} and {right.variable})")
power = Tree("+", left.power, right.power)
monome = Tree("^", left.variable, power)
return Tree("*", right.coefficient, monome)
@multiply.register(MOMonomial, MOstrPower)
@special_case(multiply_filter)
def momonomial_mostr(left, right):
""" Multiply a MOMonomial and a MOstrPower
>>> a = MOMonomial(2, 'x', 4)
>>> b = MOstrPower('x', 2)
>>> print(multiply(a, b))
*
> 2
> ^
| > x
| > +
| | > 4
| | > 2
>>> a = MOMonomial(2, 'y', 4)
>>> b = MOstrPower('x', 2)
>>> multiply(a, b)
Traceback (most recent call last):
...
NotImplementedError: Can't multiply MOstrPower and Monomial if they don'thave same variable (got y and x)
"""
if left.variable != right.variable:
raise NotImplementedError("Can't multiply MOstrPower and Monomial if they don't"
f"have same variable (got {left.variable} and {right.variable})")
power = Tree("+", left.power, right.power)
monome = Tree("^", left.variable, power)
return Tree("*", left.coefficient, monome)
@multiply.register(MOstr, MOMonomial)
@special_case(multiply_filter)
def mostr_momonomial(left, right):
""" Multiply a MOstr and a MOMonomial
>>> a = MOstr('x')
>>> b = MOMonomial(2, 'x', 4)
>>> print(multiply(a, b))
*
> 2
> ^
| > x
| > 5
>>> a = MOstr('x')
>>> b = MOMonomial(2, 'y', 4)
>>> multiply(a, b)
Traceback (most recent call last):
...
NotImplementedError: Can't multiply MOstr and Monomial if they don'thave same variable (got x and y)
"""
if left.variable != right.variable:
raise NotImplementedError("Can't multiply MOstr and Monomial if they don't"
f"have same variable (got {left.variable} and {right.variable})")
return MOMonomial(right.coefficient, right.variable, right.power.value+1)
@multiply.register(MOMonomial, MOstr)
@special_case(multiply_filter)
def momonomial_mostr(left, right):
""" Multiply a MOMonomial and a MOstr
>>> a = MOMonomial(2, 'x', 4)
>>> b = MOstr('x')
>>> print(multiply(a, b))
*
> 2
> ^
| > x
| > 5
>>> a = MOMonomial(2, 'y', 4)
>>> b = MOstr('x')
>>> multiply(a, b)
Traceback (most recent call last):
...
NotImplementedError: Can't multiply MOstr and Monomial if they don'thave same variable (got y and x)
"""
if left.variable != right.variable:
raise NotImplementedError("Can't multiply MOstr and Monomial if they don't"
f"have same variable (got {left.variable} and {right.variable})")
return MOMonomial(left.coefficient, left.variable, left.power.value+1)
@multiply.register(MOMonomial, MOMonomial)
@special_case(multiply_filter)
def momonomial_momonomial(left, right):
""" Multiply a MOMonomial and a MOMonomial
>>> a = MOMonomial(2, 'x', 4)
>>> b = MOMonomial(3, 'x', 2)
>>> print(multiply(a, b))
*
> *
| > 2
| > 3
> ^
| > x
| > +
| | > 4
| | > 2
>>> a = MOMonomial(2, 'y', 4)
>>> b = MOMonomial(3, 'x', 2)
>>> multiply(a, b)
Traceback (most recent call last):
...
NotImplementedError: Can't multiply MOMonomial and Monomial if they don'thave same variable (got y and x)
"""
if left.variable != right.variable:
raise NotImplementedError("Can't multiply MOMonomial and Monomial if they don't"
f"have same variable (got {left.variable} and {right.variable})")
powers = Tree("+", left.power, right.power)
monome = Tree("^", left.variable, powers)
coefs = Tree("*", left.coefficient, right.coefficient)
return Tree("*", coefs, monome)
# -----------------------------
# Reglages pour 'vim'
# vim:set autoindent expandtab tabstop=4 shiftwidth=4: