ctypesio (version 0.1.2)

write_f64: Convert values to the given type and write to a connection

Description

Convert values to the given type and write to a connection

Usage

write_f64(con, x, endian = NULL, bounds_check = NULL, na_check = NULL)
write_dbl(con, x, endian = NULL, bounds_check = NULL, na_check = NULL)
write_f32(con, x, endian = NULL, bounds_check = NULL, na_check = NULL)
write_single(con, x, endian = NULL, bounds_check = NULL, na_check = NULL)
write_f16(con, x, endian = NULL, bounds_check = NULL, na_check = NULL)
write_half(con, x, endian = NULL, bounds_check = NULL, na_check = NULL)

Value

If con is a connection then this connection is returned invisibly. If con is a raw vector then new data is appended to this vector

Arguments

con

Connection object or raw vector. When con is a raw vector, new data will be appended to the vector and returned. Connection objects can be created with file(), url(), rawConnection() or any of the other many connection creation functions.

x

vector to write

endian

Ordering of bytes within the file when reading multi-byte values. Possible values: 'big' or 'little'. Default: NULL indicates that endian option should be retrieved from the connection object if possible (where the user has used set_endian()) or otherwise will be set to "little"

bounds_check

Check values lie within bounds of the given type. Default: NULL indicates that this option should be retrieved from the connection object if possible (where the user has used set_bounds_check()) or otherwise will be set to "error"

na_check

Check for NAs in the data to be written. Default: NULL indicates that this option should be retrieved from the connection object if possible (where the user has used set_na_check()) or otherwise will be set to "error"

See Also

Other data output functions: fprintf(), write_hex(), write_raw(), write_uint8(), write_utf8()

Examples

con <- file(tempfile(), "wb")
write_f64(con, c(1, 2, 3, 4))
close(con)