Floating point number support (OMFLOAT)

The floating point library is a collection of basic arithmetic, exponential, and miscellaneous math functions based on the C math library. You can use the functions in this library to perform double-precision floating point arithmetic.

The syntax of most BCD functions is the same as that for the corresponding floating point functions, and you can safely import both of them - omfloat.xmd and ombcd.xmd - in a single OmniMark program.

The floating point external function library consists of the following files:

  • omfloat.so (for UNIX), or omfloat.dll (for Windows), the floating point library
  • omfloat.xmd, which defines the float data type and all the functions and constants in the module.

There are several categories of external functions in the floating point library, all of which use the same operators as in the BCD library and in core OmniMark:

  • basic arithmetic functions.
  • comparison operators.
  • functions for rounding numbers.
  • exponential functions.

You can do output of all floating point numbers by using the OmniMark template formatting language and by using the format operator ("d" %).

Notes:

  1. The trigonometry functions that were in this library in previous versions of OmniMark are now in their own library, omtrig - trigonometry.
  2. The Bessel functions that were in this library in previous versions of OmniMark are now in their own library, ombessel - Bessel functions.

To use omfloat, you must import it into your program using a statement like this: 

  import "omfloat.xmd" unprefixed

(Please see the import topic for more on importing.)

Functions