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BinaryRead

BinaryRead[stream]
reads one byte of raw binary data from an input stream, and returns an integer from 0 to 255.
BinaryRead
reads an object of the specified type.
BinaryRead
reads a sequence of objects of the specified types.
MORE INFORMATION
  • Possible types to read are:
"Byte"8-bit unsigned integer
"Character8"8-bit character
"Character16"16-bit character
"Complex64"IEEE single-precision complex number
"Complex128"IEEE double-precision complex number
"Complex256"IEEE quad-precision complex number
"Integer8"8-bit signed integer
"Integer16"16-bit signed integer
"Integer24"24-bit signed integer
"Integer32"32-bit signed integer
"Integer64"64-bit signed integer
"Integer128"128-bit signed integer
"Real32"IEEE single-precision real number
"Real64"IEEE double-precision real number
"Real128"IEEE quad-precision real number
"TerminatedString"null-terminated string of 8-bit characters
"UnsignedInteger8"8-bit unsigned integer
"UnsignedInteger16"16-bit unsigned integer
"UnsignedInteger24"24-bit unsigned integer
"UnsignedInteger32"32-bit unsigned integer
"UnsignedInteger64"64-bit unsigned integer
"UnsignedInteger128"128-bit unsigned integer
  • The first argument to BinaryRead can be InputStream, or simply if there is only one open input stream with the specified name.
  • There is always a "current point" maintained for any stream. When you read an object from a stream, the current point is left after the input you read. Successive calls to BinaryRead can therefore be used to read successive objects in a stream such as a file.
  • The following options can be given:
ByteOrdering$ByteOrderingwhat byte ordering to use
Path$Paththe path to search for files to be opened
EXAMPLESCLOSE ALL
Basic Examples   (1)
Create a file with a sequence of bytes:
Read the first byte from the file:
Read the second byte as an 8-bit character:
Read the next byte as an 8-bit signed integer:
Close the file:
Create a file with a sequence of bytes:
In[1]:=
Click for copyable input
In[2]:=
Click for copyable input
In[3]:=
Click for copyable input
Read the first byte from the file:
In[4]:=
Click for copyable input
Out[4]=
Read the second byte as an 8-bit character:
In[5]:=
Click for copyable input
Out[5]=
Read the next byte as an 8-bit signed integer:
In[6]:=
Click for copyable input
Out[6]=
Close the file:
In[7]:=
Click for copyable input
Out[7]=
New in 5.1 | Last modified in 6
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