diff options
Diffstat (limited to 'main.sts')
| -rw-r--r-- | main.sts | 47 |
1 files changed, 28 insertions, 19 deletions
@@ -3,6 +3,7 @@ module ia32/float/float.sts module cipher.sts module keygen.sts module freq.sts +module bifreq.sts [ sd 0 swap drop ] @@ -10,8 +11,20 @@ defword nicedist 3e9eb852 float_fload exit +defword zeros + do dup 0 = until + 0 swap + 1 - od drop +exit + +defword clear + do dup 0 = until + swap drop + 1 - od drop +exit + defword calcdist ; distance from ideal as sqrt sum square diff - 1b ref as calcdist.textfr + 2bf ref as calcdist.textfr local calcdist.fr 0 do dup 1a = until dup word_size mul dup dup @@ -23,16 +36,18 @@ defword calcdist ; distance from ideal as sqrt sum square diff 0 do dup 19 = until swap float_fload swap float_fload float_add float_fstore swap 1 + od drop - float_fload float_sqrt nicedist float_less + float_fload float_sqrt nicedist + 2a4 clear float_less exit defword checktext as checktext.length local checktext.text ; Count frequencies: + ; 676 latin bigrams: + 2a4 zeros local checktext.bifr ; 26 latin letters: - 0 0 0 0 0 0 0 0 0 0 0 0 0 - 0 0 0 0 0 0 0 0 0 0 0 0 0 local checktext.fr + 1a zeros local checktext.fr ; count how much of each letter is in text: 0 local checktext.count checktext.length do 1 - @@ -43,21 +58,16 @@ defword checktext fi dup dup 'Z' > 0 = swap 'A' < 0 = mul if dup 'Z' swap - word_size mul checktext.fr + dup @ 1 + swap ! checktext.count @ 1 + checktext.count ! - fi dup dup 8 > 0 = swap 1 < 0 = mul if drop drop drop - 'x' sys_write_err - drop drop drop drop drop drop drop drop drop drop drop drop drop - drop drop drop drop drop drop drop drop drop drop drop drop drop - 0 exit fi dup dup 1f > 0 = swap e < 0 = mul if drop drop drop - 'U' sys_write_err - drop drop drop drop drop drop drop drop drop drop drop drop drop - drop drop drop drop drop drop drop drop drop drop drop drop drop + fi dup dup 8 > 0 = swap 1 < 0 = mul if + 2c1 clear + 0 exit fi dup dup 1f > 0 = swap e < 0 = mul if + 2c1 clear 0 exit fi drop dup 0 = untilod drop ; At least 1/4 characters in text should be alphabetical: checktext.count @ float_iload checktext.length float_iload float_div - 1 float_iload 4 float_iload float_div float_less if drop - drop drop drop drop drop drop drop drop drop drop drop drop drop - drop drop drop drop drop drop drop drop drop drop drop drop drop + 1 float_iload 4 float_iload float_div float_less if + 2bf clear 0 exit fi ; normalize: 0 do dup 1a = until @@ -66,12 +76,11 @@ defword checktext float_div float_fstore swap ! 1 + od drop ; Decide if text is real: - freq_eng calcdist if 1 else + bifreq_eng freq_eng calcdist if 1 else 0 fi ; Remove frequencies from stack: - sd - sd sd sd sd sd sd sd sd sd sd sd sd sd - sd sd sd sd sd sd sd sd sd sd sd sd sd + 2be set + 2be clear exit set_entry float_init ; this is program with floats |