47 lines
1.1 KiB
Bash
Executable File
47 lines
1.1 KiB
Bash
Executable File
#!/bin/bash
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# Calculate large exponent
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# php in 'safe mode' (god dag yx skaft)
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# passes the parameters sent in one string
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# turning off safe mode in the php.ini file
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# does not seem to change this behaviour.
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# to overcome this sed will extract the variables
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#echo $1
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#
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c=`echo $1 | sed 's/.*A \([0-9]*\) B.*/\1/'`
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d=`echo $1 | sed 's/.*B \([0-9]*\) C.*/\1/'`
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n=`echo $1 | sed 's/.*C \([0-9]*\) D.*/\1/'`
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args=`echo "<p> c " $c " d " $d " n " $n "</p>"`
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#
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# calculate c^d%n
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date=`date | sed 's\:\_\g' | sed 's\ \_\g'`
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#echo $date
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# create a bc script to calculate this.
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# php5 is sopposed to have bc embedded...
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#
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cat calc_big_expon.bc > calc_big_expon.$$.$date.bc
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#echo " calc_big_expon.bc > calc_big_expon.$$.$date.bc ";
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echo "r=1;" >> calc_big_expon.$$.$date.bc
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echo "t($c,$d,$n);" >> calc_big_expon.$$.$date.bc
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echo "r;" >> calc_big_expon.$$.$date.bc
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#echo "invoking bc "
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#more calc_big_expon.$$.$date.bc
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#bc < calc_big_expon.$$.$date.bc
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#echo "bc invoked "
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#ls -l calc_big_expon.$$.$date.bc
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result=`bc < calc_big_expon.$$.$date.bc | tail -1`
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#echo $args $result
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echo $result
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rm -rf calc_big_expon.$$.$date.bc
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