abs.caslで、SF,OFを返すように仕様変更

diff --git a/as/FUNC/abs.casl b/as/FUNC/abs.casl
index ef7d045..35aa20d 100644 (file)
--- a/as/FUNC/abs.casl
+++ b/as/FUNC/abs.casl
@@ -1,9 +1,17 @@
 ;;; GR1を絶対値に変換する
+;;; 入力 GR1:-32768〜32767の整数
+;;; 出力 GR1:入力された整数の絶対値
+;;;       OF:入力されたGR1が-32768の場合、1
+;;;       SF:入力されたGR1が負数(-32767〜-1)の場合、1
 ABS     START
         AND     GR1,GR1
         JPL     FIN
         JZE     FIN
-        XOR     GR1,=#FFFF
-        ADDA    GR1,=1
+        XOR     GR1,ALLON
+        ADDA    GR1,ONE
+        JOV     FIN
+        CPL     GR1,ALLON
 FIN     RET
+ONE     DC      1
+ALLON   DC      #FFFF
         END

diff --git a/as/FUNC/abs_call.casl b/as/FUNC/abs_call.casl
index 4a73221..1d0c3b5 100644 (file)
--- a/as/FUNC/abs_call.casl
+++ b/as/FUNC/abs_call.casl
@@ -4,12 +4,26 @@ MAIN    START
         LAD     GR2,0
 MLOOP   CPA     GR2,MLEN
         JZE     MFIN
+        OUT     SEP,MLEN
         LD      GR1,MVAL,GR2
-        CALL    ABS
         CALL    OUTA
+        CALL    ABS
+        JOV     PUTOV
+        JMI     PUTM
+        OUT     PLUS,=1
+        JUMP    PUTD
+PUTM    OUT     MINUS,=1
+        JUMP    PUTD
+PUTOV   OUT     OV,=2
+PUTD    CALL    OUTA
+        OUT     SEP,MLEN
         LAD     GR2,1,GR2
         JUMP    MLOOP
 MFIN    RET
 MVAL    DC      12,-12,1,-1,32767,-32767,0,-32768
 MLEN    DC      8
+SEP     DC      '--------'
+PLUS    DC      '+'
+MINUS   DC      '-'
+OV      DC      'OV'
         END

diff --git a/as/FUNC/abs_call1.casl b/as/FUNC/abs_call1.casl
new file mode 100644 (file)
index 0000000..b53de42
--- /dev/null
+++ b/as/FUNC/abs_call1.casl
@@ -0,0 +1,8 @@
+;;; ABSを呼び出す
+;;; casl2 abs_call.casl abs.casl outa.casl
+MAIN    START
+        LD      GR1,MVAL
+        CALL    ABS
+MFIN    RET
+MVAL    DC      -32768
+        END