Float

An xsd:float is an IEEE-754 32-bit floating point number, written in scientific notation.

The lexical form is the same as xsd:double, the only difference is that the value space of xsd:float is smaller. See Double for details.

ExessResult exess_read_float(float *out, const char *str)

Read an xsd:float string after any leading whitespace.

Values beyond the range of float will produce -INF or INF.

Parameters

  • out – Set to the parsed value, or NAN on error.

  • str – String input.

Returns

The count of characters read, and a status code.

ExessResult exess_write_float(float value, size_t buf_size, char *buf)

Write a canonical xsd:float string.

Any float value is supported. Reading the resulting string with exess_read_float() will produce exactly value, except the extra bits in NaNs are not preserved.

Parameters

  • value – Value to write.

  • buf_size – The size of buf in bytes.

  • buf – Output buffer, or null to only measure.

Returns

The count of characters in the output, and status ExessStatus.EXESS_SUCCESS, or ExessStatus.EXESS_NO_SPACE if the buffer is too small.

EXESS_MAX_FLOAT_LENGTH

The maximum length of a canonical xsd:float string, 15.