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: #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> |
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<span style="color: #000080;font-style:italic;">-- {16,0,0b0111111111111111}, -- nope</span> |
<span style="color: #000080;font-style:italic;">-- {16,0,0b0111111111111111}, -- nope</span> |
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<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> |
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<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> |
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<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;">0b01000000</span><span style="color: #0000FF;">},</span> |
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<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> |
<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> |
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<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: #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> |
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<span style="color: #000080;font-style:italic;">-- {8,2,0b01111111}, -- nope</span> |
<span style="color: #000080;font-style:italic;">-- {8,2,0b01111111}, -- nope</span> |
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<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;">7</span><span style="color: #0000FF;">,</span><span style="color: #000000;">0b01111110</span><span style="color: #0000FF;">},</span> |
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<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> |
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<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> |
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<span style="color: #000080;font-style:italic;">-- {32,2,0b01111111111111111111111111111111<nowiki>}}</nowiki> -- nope</span> |
<span style="color: #000080;font-style:italic;">-- {32,2,0b01111111111111111111111111111111<nowiki>}}</nowiki> -- nope</span> |
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<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> |
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<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: #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> |
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<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> |
<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> |
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<!--</syntaxhighlight>--> |
<!--</syntaxhighlight>--> |
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{{out}} |
{{out}} |
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Be warned I could not get the largest positive values to match the Wikipedia page... |
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. |
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<pre> |
<pre> |
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0000110111011101 = 3.553926944e-6 |
0000110111011101 = 3.553926944e-6 |
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1110110010101000 = -12.65625 |
1110110010101000 = -12.65625 |
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0000000000000001 = 1.38777878e-17 |
0000000000000001 = 1.38777878e-17 |
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0011111111111111 = 0.9999389648 |
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0111111111111110 = 2.863890392e+250 |
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01000000 = 1 |
01000000 = 1 |
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11000000 = -1 |
11000000 = -1 |
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00100000 = 0.25 |
00100000 = 0.25 |
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00000001 = 5.960464478e-8 |
00000001 = 5.960464478e-8 |
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01111110 = 4.562440618e+192 |
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01111111 = 0.0009689331 |
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00000000000000000000000000000001 = 7.523163846e-37 |
00000000000000000000000000000001 = 7.523163846e-37 |
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01111111111111111111111111111110 = 2.269007734e+279 |
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</pre> |
</pre> |
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