Posit numbers/decoding: Difference between revisions
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<span style="color: #0000FF;">{</span><span style="color: #000000;">16</span><span style="color: #0000FF;">,</span><span style="color: #000000;">2</span><span style="color: #0000FF;">,</span><span style="color: #000000;">0b0000000000000001</span><span style="color: #0000FF;">},</span>
<span style="color: #000080;font-style:italic;">-- {16,0,0b0111111111111111}, -- nope</span>
<span style="color: #0000FF;">{</span><span style="color: #000000;">16</span><span style="color: #0000FF;">,</span><span style="color: #000000;">0</span><span style="color: #0000FF;">,</span><span style="color: #000000;">0b0011111111111111</span><span style="color: #0000FF;">},</span>
<span style="color: #0000FF;">{</span><span style="color: #000000;">16</span><span style="color: #0000FF;">,</span><span style="color: #000000;">6</span><span style="color: #0000FF;">,</span><span style="color: #000000;">0b0111111111111110</span><span style="color: #0000FF;">},</span>
<span style="color: #0000FF;">{</span><span style="color: #000000;">8</span><span style="color: #0000FF;">,</span><span style="color: #000000;">1</span><span style="color: #0000FF;">,</span><span style="color: #000000;">0b01000000</span><span style="color: #0000FF;">},</span>
<span style="color: #0000FF;">{</span><span style="color: #000000;">8</span><span style="color: #0000FF;">,</span><span style="color: #000000;">1</span><span style="color: #0000FF;">,</span><span style="color: #000000;">0b11000000</span><span style="color: #0000FF;">},</span>
Line 103 ⟶ 105:
<span style="color: #0000FF;">{</span><span style="color: #000000;">8</span><span style="color: #0000FF;">,</span><span style="color: #000000;">2</span><span style="color: #0000FF;">,</span><span style="color: #000000;">0b00000001</span><span style="color: #0000FF;">},</span>
<span style="color: #000080;font-style:italic;">-- {8,2,0b01111111}, -- nope</span>
<span style="color: #0000FF;">{</span><span style="color: #000000;">
<span style="color: #0000FF;">{</span><span style="color: #000000;">8</span><span style="color: #0000FF;">,</span><span style="color: #000000;">2</span><span style="color: #0000FF;">,</span><span style="color: #000000;">0b01111111</span><span style="color: #0000FF;">},</span>
<span style="color: #0000FF;">{</span><span style="color: #000000;">32</span><span style="color: #0000FF;">,</span><span style="color: #000000;">2</span><span style="color: #0000FF;">,</span><span style="color: #000000;">0b00000000000000000000000000000001</span><span style="color: #0000FF;">},</span>
<span style="color: #000080;font-style:italic;">-- {32,2,0b01111111111111111111111111111111<nowiki>}}</nowiki> -- nope</span>
<span style="color: #0000FF;">{</span><span style="color: #000000;">32</span><span style="color: #0000FF;">,</span><span style="color: #000000;">5</span><span style="color: #0000FF;">,</span><span style="color: #000000;">0b01111111111111111111111111111110</span><span style="color: #0000FF;">}}</span>
<span style="color: #008080;">for</span> <span style="color: #000000;">t</span> <span style="color: #008080;">in</span> <span style="color: #000000;">tests</span> <span style="color: #008080;">do</span>
<span style="color: #7060A8;">printf</span><span style="color: #0000FF;">(</span><span style="color: #000000;">1</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"%s = %v\n"</span><span style="color: #0000FF;">,</span><span style="color: #7060A8;">call_func</span><span style="color: #0000FF;">(</span><span style="color: #000000;">posit_decode</span><span style="color: #0000FF;">,</span><span style="color: #000000;">t</span><span style="color: #0000FF;">))</span>
Line 110 ⟶ 115:
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{{out}}
Be warned I could not get the largest positive values to match the Wikipedia page... and instead I've put in some bigger values, which are either wrong or prove that table on the wp page is wrong.
<pre>
0000110111011101 = 3.553926944e-6
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1110110010101000 = -12.65625
0000000000000001 = 1.38777878e-17
0011111111111111 = 0.9999389648
0111111111111110 = 2.863890392e+250
01000000 = 1
11000000 = -1
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00100000 = 0.25
00000001 = 5.960464478e-8
01111110 = 4.562440618e+192
01111111 = 0.0009689331
00000000000000000000000000000001 = 7.523163846e-37
01111111111111111111111111111110 = 2.269007734e+279
</pre>
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