Unicode polynomial equation: Difference between revisions

=={{header|Go}}==

Although this program provides full support for Unicode vulgar fractions, note that there is no guarantee that they (or arithmetic on them) will successfully 'round trip' due to floating point arithmetic being used in the underlying calculations and some of them being recurring rather than exact decimals in any case.

 

import (

printEquation(coefs)

}

 

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=={{header|Julia}}==

The task allows the "polynomials" to be parsed to have negative exponents. This makes them <em>Laurent</em> polynomials, not ordinary polynomials.

 

struct LaurentPolynomial{T}

println(lpad(s, 48), " => ", topoly(s, 'x'))

end

<pre>

1x⁵ - 2x⁴ + 42x³ + 0x² + 40x + 1 => x⁵ - 2x⁴ + 42x³ + 40x + 1

=={{header|Nim}}==

{{trans|Go}}

from unicode import toRunes

 

if c != 0: coefs[p] = coefs.getOrDefault(p) + c

 

 

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=={{header|Phix}}==

To simplify this task I first created a test file (save as utf8, Unicode_polynomial_equation.e):

<span style="color: #008080;">constant</span> <span style="color: #000000;">raw_text</span> <span style="color: #0000FF;">=</span> <span style="color: #008000;">"""

-0.00x⁺¹⁰ + 1.0·x ** 5 + -2e0x^4 + +0,042.00 × x ⁺³ + +.0x² + 20.000 000 000x¹ - -1x⁺⁰ + .0x⁻¹ + 20.x¹

<span style="color: #008080;">return</span> <span style="color: #7060A8;">split</span><span style="color: #0000FF;">(</span><span style="color: #000000;">raw_text</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"\n"</span><span style="color: #0000FF;">)</span>

<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>

Explanation: <br>

On finding a line beginning with "==> ", parse the previous line and check that the output matches the rest of the line.<br>

bytes happen to be less than 255, which would not necessarily be valid utf8/32.

 

<span style="color: #000080;font-style:italic;">-- demo\rosetta\Unicode_polynomial_equation.exw</span>

<span style="color: #008080;">constant</span> <span style="color: #000000;">uni_frac</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">platform</span><span style="color: #0000FF;">()!=</span><span style="color: #004600;">WINDOWS</span> <span style="color: #000080;font-style:italic;">-- if true output unicode superscripts and vulgar fractions</span>

<span style="color: #0000FF;">?</span><span style="color: #008000;">"done"</span>

<span style="color: #0000FF;">{}</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">wait_key</span><span style="color: #0000FF;">()</span>

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uni_frac = false (ie windows)

{{trans|Go}}

{{libheader|Wren-pattern}}

 

var powers = [

}

printEquation.call(coefs)

 

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