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RawMemoryWrite

[Experimental]

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RawMemoryWrite[ptr,val]

writes a binary representation of val to the raw memory at the pointer ptr.

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RawMemoryWrite[ptr,val,offset]

writes to an offset pointer.

Details

Examples

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Basic Examples  (2)Summary of the most common use cases

Allocate an object of type "CInt":

In[1]:=1
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https://wolfram.com/xid/0dqwiufp3f2-2o7ot0

Write a value to the raw memory:

In[2]:=2
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https://wolfram.com/xid/0dqwiufp3f2-x04r7d
Out[2]=2

Read the value:

In[3]:=3
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https://wolfram.com/xid/0dqwiufp3f2-ehrpuk
Out[3]=3

Allocate a raw memory of 10 objects of type "CFloat":

In[1]:=1
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https://wolfram.com/xid/0dqwiufp3f2-klczv8

Initialize the raw memory with random numbers between 0 and 1:

In[2]:=2
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https://wolfram.com/xid/0dqwiufp3f2-ieownp

Import the values of the raw memory as a list:

In[3]:=3
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https://wolfram.com/xid/0dqwiufp3f2-t44xur
Out[3]=3

Scope  (1)Survey of the scope of standard use cases

RawMemoryWrite supports passing a managed pointer as its first argument:

In[1]:=1
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https://wolfram.com/xid/0dqwiufp3f2-65xwac
Out[1]=1
In[2]:=2
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https://wolfram.com/xid/0dqwiufp3f2-9mwcxd
Out[2]=2

It also supports passing a non-managed pointer:

In[3]:=3
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https://wolfram.com/xid/0dqwiufp3f2-ouydea
Out[3]=3
In[4]:=4
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https://wolfram.com/xid/0dqwiufp3f2-8op9ak
Out[4]=4

Properties & Relations  (1)Properties of the function, and connections to other functions

Allocate a buffer of 5 objects of type "Integer16" and fill it with the value -1:

In[4]:=4
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https://wolfram.com/xid/0dqwiufp3f2-66ymsm

RawMemoryExport can be used for the same purpose:

In[4]:=4
✖
https://wolfram.com/xid/0dqwiufp3f2-zur0p1
Out[4]=4
Wolfram Research (2023), RawMemoryWrite, Wolfram Language function, https://reference.wolfram.com/language/ref/RawMemoryWrite.html.
✖
Wolfram Research (2023), RawMemoryWrite, Wolfram Language function, https://reference.wolfram.com/language/ref/RawMemoryWrite.html.

Text

Wolfram Research (2023), RawMemoryWrite, Wolfram Language function, https://reference.wolfram.com/language/ref/RawMemoryWrite.html.

✖
Wolfram Research (2023), RawMemoryWrite, Wolfram Language function, https://reference.wolfram.com/language/ref/RawMemoryWrite.html.

CMS

Wolfram Language. 2023. "RawMemoryWrite." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/RawMemoryWrite.html.

✖
Wolfram Language. 2023. "RawMemoryWrite." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/RawMemoryWrite.html.

APA

Wolfram Language. (2023). RawMemoryWrite. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/RawMemoryWrite.html

✖
Wolfram Language. (2023). RawMemoryWrite. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/RawMemoryWrite.html

BibTeX

@misc{reference.wolfram_2025_rawmemorywrite, author="Wolfram Research", title="{RawMemoryWrite}", year="2023", howpublished="\url{https://reference.wolfram.com/language/ref/RawMemoryWrite.html}", note=[Accessed: 03-June-2025 ]}

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@misc{reference.wolfram_2025_rawmemorywrite, author="Wolfram Research", title="{RawMemoryWrite}", year="2023", howpublished="\url{https://reference.wolfram.com/language/ref/RawMemoryWrite.html}", note=[Accessed: 03-June-2025 ]}

BibLaTeX

@online{reference.wolfram_2025_rawmemorywrite, organization={Wolfram Research}, title={RawMemoryWrite}, year={2023}, url={https://reference.wolfram.com/language/ref/RawMemoryWrite.html}, note=[Accessed: 03-June-2025 ]}

✖
@online{reference.wolfram_2025_rawmemorywrite, organization={Wolfram Research}, title={RawMemoryWrite}, year={2023}, url={https://reference.wolfram.com/language/ref/RawMemoryWrite.html}, note=[Accessed: 03-June-2025 ]}