TOMS722 - IEEE Arithmetic Support

TOMS722 is a set of C routines that support IEEE arithmetic. Both single and double precision routines are supplied.

The original, correct and authentic copies of the source code are available from the TOMS subdirectory of NETLIB.

Reference:

W J Cody and J T Coonen,
Algorithm 722: Routines to Support IEEE Binary Floating Point Arithmetic;
ACM Transactions on Mathematical Software,
Volume 19, Number 4.

Files you may copy include:

• toms722.c, the source code;
• toms722.h, the INCLUDE file;
• toms722_prb.c, the calling program;
• toms722_prb.out, the sample output.

The list of single precision routines includes:

• COPYSIGN_F returns the first argument with the sign of the second.
• FINITE_F returns true (1) if its argument is finite, and false (0) otherwise.
• ISNAN_F returns true (1) if its argument is NaN, and false (0) otherwise.
• LOGB_F returns the exponent of a real number.
• MACHAR_S computes machine constants for floating point arithmetic.
• SCALB_F returns ARG * 2 ** N.
• TEST_F returns its input argument.

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