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Revision as of 03:41, 15 December 2008
C Programming Language Tutorials
Truth values in C and the Iverson Bracket
Truth values in C can be simple integers. The C programming language is set up nicely to support the Iverson Bracket set notation. Iverson proposed that truth values should be numerical with true=1 and false=0. Actually 0=false in C and all non-zero values are True, even -1 is true in C.
zero : false non-zero : true
The following calculates the maximum of two numbers using an Iverson bracket formula in C.
The traditional Iverson bracket notation in algebra: [a>b] gives 1 or 0.
max = (a>=b)*a + (b<a)*b; in C ============================= lets calculate using 6 and 7 7 = (6>=7)*6 + (7<6)*7 in algegra