mget - reads byte or word in a given binary format and convert to double

mgeti - reads byte or word in a given binary format return an int type

Calling Sequence

x=mget([n,type,fd])

x=mgeti([n,type,fd])

Parameters

• n :a positive scalar: The number of items to be read.
• fd : scalar. The fd parameter returned by the function mopen . -1 stands for last opened file. Default value is -1.
• type : a string. Give the binary format used to write all the entries of x.
• x : a vector of floating point or integer type numbers

Description

The mget function reads data in the input specified by the stream parameter fd and returns a vector of floating point data. The mgeti function reads data in the input specified by the stream parameter fd and returns a vector of integer data.

Data is read at the position at which the file pointer is currently pointing and advances the indicator appropriately.

The type parameter is a conversion specifier which may be set to any of the following flag characters (with default value "l"):

WARNING, when reading binary files under Windows to not forget to open the file with the b option like fd1=mopen(file1,'rb') if not the file will be interpreted as text file and the bytes with value 13 will be interpreted as newlines and ommitted.

"l", "i", "s", "ul", "ui", "us", "d", "f", "c", "uc": for reading respectively a long, an int, a short, an unsigned long, an unsigned int, an unsigned short, a double, a float, a char and an unsigned char. The bytes which are read are automatically swapped if necessary (by checking little-endian status). This default swapping mode can be suppressed by adding a flag in the mopen function. Format "l", "d" and "f" are valid only with the mget function.

"..l" or "..b": It is also possible to read in little-endian or big-endian mode by adding a 'l' or 'b' character at the end of a type specification. For example "db" will read a double in big-endian mode.

Examples

    
    file1 = 'test1.bin';
    file2 = 'test2.bin';
    fd1=mopen(file1,'wb');
    fd2=mopen(file2,'wb');
    mput(1996,'ull',fd1);
    mput(1996,'ull',fd2);
    mclose(fd1);
    mclose(fd2);

    fd1=mopen(file1,'rb');
    if 1996<>mget(1,'ull',fd1) ;write(%io(2),'Bug');end;
    fd2=mopen(file2,'rb');
    if 1996<>mget(1,'ull',fd2) ;write(%io(2),'Bug');end;
    mclose(fd1);
    mclose(fd2);
    
  

See Also

mclose ,   meof ,   mfprintf ,   fprintfMat ,   mfscanf ,   fscanfMat ,   mget ,   mgetstr ,   mopen ,   mprintf ,   mput ,   mputstr ,   mscanf ,   mseek ,   mtell ,   mdelete ,