Move methods to extension package.

lib/math/integer

@@ -35,7 +35,6 @@
 
 
 source bashlet datatype/number
-source bashlet math/float
 
 
 #@method
@@ -59,43 +58,6 @@ function bashlets_math_integer_sign()
     [[ $value -ge $opposite ]] && echo 1 || echo -1
 }
 
-#@method
-function bashlets_math_integer_is_prime()
-{
-    $BASHLETS_NAMESPACE number validate_as_integer "$1" || return 1
-
-    # cf. https://primes.utm.edu/notes/faq/negative_primes.html
-    local value=$(bashlets_math_integer_abs $1)
-
-    if (($value == 2))
-    then
-        return 0
-    elif (($value < 2)) || (($value % 2 == 0))
-    then
-        return 1
-    else
-        local i sqrt_value="$($BASHLETS_NAMESPACE float sqrt $value)"
-        for i in $(seq 3 2 "$sqrt_value")
-        do
-            if (($value % $i == 0))
-            then
-                return 1
-            fi
-        done
-        return 0
-    fi
-}
-
-#@method
-function bashlets_math_integer_is_perfect_square()
-{
-    local value=${1:-0}
-    local sqrt_value="$($BASHLETS_NAMESPACE float sqrt $value)" || return 1
-    sqrt_value="$($BASHLETS_NAMESPACE float to_int $sqrt_value)"
-
-    ((sqrt_value * sqrt_value == value))
-}
-
 #@method
 function bashlets_math_integer_get_unique_factors()
 {