1 # menu for DCT, by Shiar
3 # 2004-10-02 22:55 - moved from 1.9 main
9 '+' => [2, sub {$stack[1] += shift @stack}], # addition
10 '-' => [2, sub {$stack[1] -= shift @stack}], # substraction
11 '*' => [2, sub {$stack[1] *= shift @stack}], # multiplication
12 '/' => [2, sub {$stack[1] /= shift @stack}], # division
13 'mod' => [2, sub {$stack[1] %= shift @stack}], # modulo
15 'inv' => [1, sub {$stack[0] = 1 / $stack[0]}], # 1/x
16 'sqrt' => [1, sub {$stack[0] = sqrt $stack[0]}], # square root
17 'sq' => [1, sub {$stack[0] *= $stack[0]}], # squared
18 '^' => [2, sub {$stack[1] **= shift @stack}], # exponentiation
19 'xroot'=> [2, sub {$stack[1] **= 1 / shift @stack}], # x-root of y
21 'log' => [1, sub {$stack[0] = log($stack[0]) / log(10)}], # logarithm
22 'alog' => [1, sub {$stack[0] = 10 ** $stack[0]}], # 10^x
23 'ln' => [1, sub {$stack[0] = log $stack[0]}], # natural logaritm
24 'lnp1' => [1, sub {$stack[0] = log($stack[0]+1)}], # ln(x+1)
25 'exp' => [1, sub {$stack[0] = exp($stack[0])}], # e^x
26 'expm' => [1, sub {$stack[0] = exp($stack[0])-1}], # exp(x)-1
28 'sin' => [1, sub {$stack[0] = sin $stack[0]}], # sine
29 'asin' => [1, sub {$stack[0] = atan2($stack[0], sqrt(1 - $stack[0]*$stack[0]))}], # inverse sine
30 'cos' => [1, sub {$stack[0] = cos $stack[0]}], # cosine
31 'acos' => [1, sub {$stack[0] = atan2(sqrt(1 - $stack[0]*$stack[0]), $stack[0])}], # inverse cosine
32 'tan' => [1, sub {$stack[0] = sin($stack[0]) / cos($stack[0])}], # tangent
33 # 'atan' => [1, sub {}], # arctangent
35 'sinh' => [1, sub {$stack[0] = ( exp($stack[0]) - exp(-$stack[0]) )/2}], # hyperbolic sine
36 'cosh' => [1, sub {$stack[0] = ( exp($stack[0]) + exp(-$stack[0]) )/2}], # hyperbolic cosine
37 'tanh' => [1, sub {$stack[0] = ( exp($stack[0]) - exp(-$stack[0]) )/( exp($stack[0]) + exp(-$stack[0]) )}], # hyperbolic tangent (sinh/cosh)
38 'asinh'=> [1, sub {$stack[0] = log( sqrt($stack[0]**2+1)+$stack[0] )}], # inverse hyperbolic sine
39 'acosh'=> [1, sub {$stack[0] = log( sqrt($stack[0]**2-1)+$stack[0] )}], # inverse hyperbolic cosine
40 'atanh'=> [1, sub {$stack[0] = log( (1+$stack[0]) / (1-$stack[0]) )/2}], # inverse hyperbolic tangent
42 '%' => [2, sub {$stack[0] = shift(@stack)/$stack[0]}], # percentage
43 # '%ch' => [2, sub {$val{i} = 100*(shift(@stack)-$val{i})/$val{i}}], # percentage change
44 # '%t' => [2, sub {$val{i} = 100*$val{i}/shift(@stack)}], # percentage total
46 'and' => [2, sub {$stack[1] &= shift @stack}], # bitwise and
47 'or' => [2, sub {$stack[1] |= shift @stack}], # bitwise or
48 'xor' => [2, sub {$stack[1] ^= shift @stack}], # bitwise xor
49 'not' => [2, sub {$stack[0] = ~$stack[0]}], # bitwise not
50 'sl' => [1, sub {$stack[0] *= 2}], # shift left
51 'sr' => [1, sub {$stack[0] /= 2}], # shift right
53 'abs' => [1, sub {$stack[0] = abs $stack[0]}], # absolute #todo
54 'sign' => [1, sub {$stack[0] = $stack[0] <=> 0}], # sign
55 'ip' => [1, sub {$stack[0] = int $stack[0]}], # integer part
56 'fp' => [1, sub {$stack[0] -= int $stack[0]}], # fractional part
58 # 'rnd' => [1, sub {local $_ = 10**shift @stack; $val{i} = int(($val{i}+.5)*$_)/$_}], # round
59 # 'trnc' => [1, sub {local $_ = 10**shift @stack; $val{i} = int($val{i}*$_)/$_}], # truncate
60 'floor'=> [1, sub {$stack[0] = int $stack[0]}], # floor
61 'ceil' => [1, sub {$stack[0] = int $stack[0]+.9999}], # ceil
63 'min' => [2, sub {local $_ = shift @stack; $stack[0] = $_ if $_<$stack[0] }], # minimum
64 'max' => [2, sub {local $_ = shift @stack; $stack[0] = $_ if $_>$stack[0] }], # maximum
66 'dec' => [0, sub {$set{base} = 10}], # decimal
67 'bin' => [0, sub {$set{base} = 2}], # binary
68 'oct' => [0, sub {$set{base} = 8}], # octal
69 'hex' => [0, sub {$set{base} = 16}], # hexadecimal
70 'base' => [1, sub {$set{base} = shift @stack}], # alphanumerical
72 '!' => [1, sub {local $_ = $stack[0]; $stack[0] *= $_ while --$_>1}], # factor
73 'rand' => [0, sub {unshift @stack, rand}], # random value <1
76 #while (my ($cmd, $val) = each %newaction) {
77 # $action{$cmd} = $val;
79 #%action = %newaction;
80 $action{$_} = $newaction{$_} for keys %newaction;