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added 274 characters in body

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edited Jul 7, 2017 at 11:38

PHP>=7.1, 60 bytes

prints 0 for no escape

[,$h,$u,$d]=$argv;echo$h>$u?$u>$d?ceil(($h-$d)/($u-$d)):0:1;

prints nothing for no escape

for([,$h,$u,$d]=$argv;($u>$d?:$h<=$u)&&0<$h+$t*$d-$u*++$t;);echo$t;

prints nothing for no escape

for([,$h,$u,$d]=$argv;($u>$d?:$h<=$u)&&0<$h+$t*$d-$u*++$t;);echo$t;

prints 0 for no escape

[,$h,$u,$d]=$argv;echo$h>$u?$u>$d?ceil(($h-$d)/($u-$d)):0:1;

prints nothing for no escape

for([,$h,$u,$d]=$argv;($u>$d?:$h<=$u)&&0<$h+$t*$d-$u*++$t;);echo$t;

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created Jul 7, 2017 at 10:38

prints nothing for no escape

for([,$h,$u,$d]=$argv;($u>$d?:$h<=$u)&&0<$h+$t*$d-$u*++$t;);echo$t;