/convert

Syntax:

/convert:keyword

The /convert option specifies the format of unformatted files containing numeric data. On ia32 and ia64 systems, the format used in memory is always IEEE little endian format. If you want to read and write unformatted data in IEEE little endian format, you do not need to convert your unformatted data and can omit this option (or specify /convert:native).

This method affects all unit numbers that use unformatted data specified by the program. Other methods are available to specify the format for all or certain unformatted files (see Converting Unformatted Numeric Data).

In the visual development environment, specify the Unformatted File Conversion in the Compatibility Compiler Option Category. The /convert options are:

• /convert:big_endian

  Specifies that unformatted files containing numeric data are in IEEE big endian (nonnative) format. The resulting program will read and write unformatted files containing numeric data assuming the following:

  • Big endian integer format (INTEGER declarations of the appropriate size).
  • Big endian IEEE floating-point formats (REAL and COMPLEX declarations of the appropriate size).
    
    
• /convert:cray

  Specifies that unformatted files containing numeric data are in CRAY (nonnative) big endian format. The resulting program will read and write unformatted files containing numeric data assuming the following:

  • Big endian integer format (INTEGER declarations of the appropriate size).
  • Big endian CRAY proprietary floating-point formats (REAL and COMPLEX declarations of the appropriate size).
    
    
• /convert:ibm

  Specifies that unformatted files containing numeric data are in IBM (nonnative) big endian format. The resulting program will read and write unformatted files containing numeric data assuming the following:

  • Big endian integer format (INTEGER declarations of the appropriate size).
  • Big endian IBM proprietary floating-point formats (REAL and COMPLEX declarations of the appropriate size).
    
    
• /convert:little_endian

  Specifies that numeric data in unformatted files is in native little endian integer format and IEEE little endian floating-point format (same as used in memory), as follows:

  • Integer data is in native little endian format.
  • REAL(KIND=4) and COMPLEX(KIND=4) (SINGLE PRECISION) data is in IEEE little endian S_floating format.
  • REAL(KIND=8) and COMPLEX (KIND=8) (DOUBLE PRECISION) data is in IEEE little endian T_floating format.
    
    
• /convert:native

  Specifies that numeric data in unformatted files is not converted. This is the default.

• /convert:vaxd

  Specifies that numeric data in unformatted files is in VAXD little endian format, as follows:

  • Integer data is in native little endian format.
  • REAL(KIND=4) and COMPLEX(KIND=4) (SINGLE PRECISION) data is in VAX F_floating format.
  • REAL(KIND=8) and COMPLEX (KIND=8) (DOUBLE PRECISION) data is in VAX D_floating format.
    
    
• /convert:vaxg

  Specifies that numeric data in unformatted files is in VAXG little endian format, as follows:

  • Integer data is in native little endian format.
  • REAL(KIND=4) and COMPLEX(KIND=4) (SINGLE PRECISION) data is in VAX F_floating format.
  • REAL(KIND=8) and COMPLEX(KIND=8) (DOUBLE PRECISION) data is in VAX G_floating format.

For more information on unformatted file conversion, see Converting Unformatted Numeric Data.