4a8bb32039
forgot that arm has no division (or respectively only later models have) many magic formulae out there, none seem to work 1000% on the interpreter. some big 0 ending numbers are 1 off.
122 lines
1.9 KiB
Plaintext
122 lines
1.9 KiB
Plaintext
class Integer < Value
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int as_char()
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if_plus( self - 9)
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return 32
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else
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return 48 + self
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end
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end
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int high_times( int by_high , int by_low)
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int num_high = self >> 16
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int num_low = self & 65535
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int res_high = by_high * num_high
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num_low = by_high * num_low
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num_high = num_high * by_low
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num_high = num_low + num_high
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num_high = num_high >> 16
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res_high = res_high + num_high
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return res_high
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end
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int low_times( int by_high , int by_low)
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int num_high = self >> 16
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int num_low = self & 65535
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int res_low = by_low * num_low
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num_low = by_high * num_low
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num_high = num_high * by_low
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num_low = num_low + num_high
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num_low = num_low << 16
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res_low = res_low + num_low
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return res_low
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end
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int div10()
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int minus_10 = self - 10
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int me = self
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int tmp = me >> 2
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me = me - tmp
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tmp = me >> 4
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me = me + tmp
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tmp = me >> 8
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me = me + tmp
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tmp = me >> 16
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me = me + tmp
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me = me >> 3
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int tmp2 = me << 2
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tmp2 = me + tmp2
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tmp2 = tmp2 << 1
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minus_10 = tmp2 - minus_10
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if_minus(minus_10)
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me = me + 1
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end
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return me
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end
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int div10_almost()
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int me = self
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if_zero( me >> 26 )
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me = me + 1
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end
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int res_high = me.high_times( 26214 , 26215 )
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int res_low = self >> 31
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res_high = res_high >> 2
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return res_high + res_low
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end
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Word as_string(Word str)
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if_minus( self - 10 )
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int num = as_char()
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str = str.push_char( num )
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else
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int rest = self.div10()
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str = rest.as_string( str )
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rest = rest * 10
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rest = self - rest
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str = rest.as_string(str)
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end
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return str
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end
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Word to_s()
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Word start = " "
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return as_string( start )
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end
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int puti()
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Word str = self.to_s()
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str.putstring()
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return self
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end
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int mod4()
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return self & 3
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end
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end
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