Linux & Unix Commands - Search Man Pages

HOC(1) General Commands Manual HOC(1)NAMEhoc - interactive floating point languageSYNOPSIShoc [ file ... ]DESCRIPTIONHoc interprets a simple language for floating point arithmetic, at about the level of BASIC, with C-like syntax and functions. The named files are read and interpreted in order. If no file is given or if file is hoc interprets the standard input. Hoc input consists of expressions and statements. Expressions are evaluated and their results printed. Statements, typically assignments and function or procedure definitions, produce no output unless they explicitly call print. Variable names have the usual syntax, including the name by itself contains the value of the last expression evaluated. The variables E, PI, PHI, GAMMA and DEG are predefined; the last is 59.25..., degrees per radian. Expressions are formed with these C-like operators, listed by decreasing precedence. ^ exponentiation ! - ++* / % +--> >= < <= == != && || = +=-*= /= %= Built in functions are abs, acos, asin, atan (one argument), cos, cosh, exp, int, log, log10, sin, sinh, sqrt, tan, and tanh. The function read(x) reads a value into the vari- able x and returns 0 at EOF; the statement print prints a list of expressions that may include string constants such as "hello\n". Control flow statements are if-else, while, and for, with braces for grouping. Newline ends a statement. Backslash-newline is equivalent to a space. Functions and procedures are introduced by the words func and proc; return is used to return with a value from a function. Within a function or procedure, arguments are referred to as $1, $2, etc.; all other variables are global.-=EXAMPLESfunc gcd() { temp = abs($1) % abs($2) if(temp == 0) return abs($2) return gcd($2, temp) } for(i=1; i<12; i++) print gcd(i,12)SOURCE/sys/src/cmd/hocSEE ALSObc(1), dc(1) B. W. Kernighan and R. Pike, The Unix Programming Environment, Prentice-Hall, 1984BUGSError recovery is imperfect within function and procedure definitions. HOC(1)

All times are GMT -4. The time now is 06:00 PM.