All Bit and logical operators working

c/zqfield.cpp

@@ -5,6 +5,10 @@ ZqField::ZqField(PBigInt ap) {
     mpz_init_set(p, *ap);
     mpz_init_set_ui(zero, 0);
     mpz_init_set_ui(one, 1);
+    nBits = mpz_sizeinbase (p, 2);
+    mpz_init(mask);
+    mpz_mul_2exp(mask, one, nBits-1);
+    mpz_sub(mask, mask, one);
 }
 
 ZqField::~ZqField() {
@@ -30,6 +34,14 @@ void ZqField::sub(PBigInt r, PBigInt a, PBigInt b) {
     }
 }
 
+void ZqField::neg(PBigInt r, PBigInt a) {
+    if (mpz_sgn(*a) > 0) {
+        mpz_sub(*r, p, *a);
+    } else {
+        mpz_set(*r, *a);
+    }
+}
+
 void ZqField::mul(PBigInt r, PBigInt a, PBigInt b) {
     mpz_mul(tmp,*a,*b);
     mpz_fdiv_r(*r, tmp, p);
@@ -49,6 +61,10 @@ void ZqField::mod(PBigInt r, PBigInt a, PBigInt b) {
     mpz_fdiv_r(*r, *a, *b);
 }
 
+void ZqField::pow(PBigInt r, PBigInt a, PBigInt b) {
+    mpz_powm(*r, *a, *b, p);
+}
+
 void ZqField::lt(PBigInt r, PBigInt a, PBigInt b) {
     int c = mpz_cmp(*a, *b);
     if (c<0) {
@@ -103,6 +119,30 @@ void ZqField::neq(PBigInt r, PBigInt a, PBigInt b) {
     }
 }
 
+void ZqField::land(PBigInt r, PBigInt a, PBigInt b) {
+    if (mpz_sgn(*a) && mpz_sgn(*b)) {
+        mpz_set(*r, one);
+    } else {
+        mpz_set(*r, zero);
+    }
+}
+
+void ZqField::lor(PBigInt r, PBigInt a, PBigInt b) {
+    if (mpz_sgn(*a) || mpz_sgn(*b)) {
+        mpz_set(*r, one);
+    } else {
+        mpz_set(*r, zero);
+    }
+}
+
+void ZqField::lnot(PBigInt r, PBigInt a) {
+    if (mpz_sgn(*a)) {
+        mpz_set(*r, zero);
+    } else {
+        mpz_set(*r, one);
+    }
+}
+
 int ZqField::isTrue(PBigInt a) {
     return mpz_sgn(*a);
 }
@@ -110,3 +150,42 @@ int ZqField::isTrue(PBigInt a) {
 void ZqField::copyn(PBigInt a, PBigInt b, int n) {
     for (int i=0;i<n; i++) mpz_set(a[i], b[i]);
 }
+
+void ZqField::band(PBigInt r, PBigInt a, PBigInt b) {
+    mpz_and(*r, *a, *b);
+    mpz_and(*r, *r, mask);
+}
+
+void ZqField::bor(PBigInt r, PBigInt a, PBigInt b) {
+    mpz_ior(*r, *a, *b);
+    mpz_and(*r, *r, mask);
+}
+
+void ZqField::bxor(PBigInt r, PBigInt a, PBigInt b) {
+    mpz_xor(*r, *a, *b);
+    mpz_and(*r, *r, mask);
+}
+
+void ZqField::bnot(PBigInt r, PBigInt a) {
+    mpz_xor(*r, *a, mask);
+    mpz_and(*r, *r, mask);
+}
+
+void ZqField::shl(PBigInt r, PBigInt a, PBigInt b) {
+    if (mpz_cmp_ui(*b, nBits) >= 0) {
+        mpz_set(*r, zero);
+    } else {
+        mpz_mul_2exp(*r, *a, mpz_get_ui(*b));
+        mpz_and(*r, *r, mask);
+    }
+}
+
+void ZqField::shr(PBigInt r, PBigInt a, PBigInt b) {
+    if (mpz_cmp_ui(*b, nBits) >= 0) {
+        mpz_set(*r, zero);
+    } else {
+        mpz_tdiv_q_2exp(*r, *a, mpz_get_ui(*b));
+        mpz_and(*r, *r, mask);
+    }
+}
+

c/zqfield.h

@@ -10,22 +10,40 @@ public:
     BigInt p;
     BigInt one;
     BigInt zero;
+    size_t nBits;
+    BigInt mask;
     ZqField(PBigInt ap);
     ~ZqField();
 
     void copyn(PBigInt a, PBigInt b, int n);
+
     void add(PBigInt r,PBigInt a, PBigInt b);
     void sub(PBigInt r,PBigInt a, PBigInt b);
+    void neg(PBigInt r,PBigInt a);
     void mul(PBigInt r,PBigInt a, PBigInt b);
     void div(PBigInt r,PBigInt a, PBigInt b);
     void idiv(PBigInt r,PBigInt a, PBigInt b);
     void mod(PBigInt r,PBigInt a, PBigInt b);
+    void pow(PBigInt r,PBigInt a, PBigInt b);
+
     void lt(PBigInt r, PBigInt a, PBigInt b);
     void eq(PBigInt r, PBigInt a, PBigInt b);
     void gt(PBigInt r, PBigInt a, PBigInt b);
     void leq(PBigInt r, PBigInt a, PBigInt b);
     void geq(PBigInt r, PBigInt a, PBigInt b);
     void neq(PBigInt r, PBigInt a, PBigInt b);
+
+    void land(PBigInt r, PBigInt a, PBigInt b);
+    void lor(PBigInt r, PBigInt a, PBigInt b);
+    void lnot(PBigInt r, PBigInt a);
+
+    void band(PBigInt r, PBigInt a, PBigInt b);
+    void bor(PBigInt r, PBigInt a, PBigInt b);
+    void bxor(PBigInt r, PBigInt a, PBigInt b);
+    void bnot(PBigInt r, PBigInt a);
+    void shl(PBigInt r, PBigInt a, PBigInt b);
+    void shr(PBigInt r, PBigInt a, PBigInt b);
+
     int isTrue(PBigInt a);
 };
 

parser/jaz.jison

@@ -85,6 +85,7 @@ include                 { return 'include'; }
 \&                      { return '&'; }
 \|                      { return '|'; }
 \!                      { return '!'; }
+\~                      { return '~'; }
 \<                      { return '<'; }
 \>                      { return '>'; }
 \!                      { return '!'; }

parser/jaz.js

@@ -1329,42 +1329,44 @@ case 59: return 65;
 break;
 case 60: return 94; 
 break;
-case 61: return 77; 
+case 61: return 95; 
 break;
-case 62: return 78; 
+case 62: return 77; 
 break;
-case 63: return 94; 
+case 63: return 78; 
 break;
-case 64: return 57; 
+case 64: return 94; 
 break;
-case 65: return 58; 
+case 65: return 57; 
 break;
-case 66: return 20; 
+case 66: return 58; 
 break;
-case 67: return 22; 
+case 67: return 20; 
 break;
-case 68: return 112; 
+case 68: return 22; 
 break;
-case 69: return 113; 
+case 69: return 112; 
 break;
-case 70: return 36; 
+case 70: return 113; 
 break;
-case 71: return 37; 
+case 71: return 36; 
 break;
-case 72: return 29; 
+case 72: return 37; 
 break;
-case 73: return 24; 
+case 73: return 29; 
 break;
-case 74: return 102; 
+case 74: return 24; 
 break;
-case 75: return 5; 
+case 75: return 102; 
 break;
-case 76: console.log("INVALID: " + yy_.yytext); return 'INVALID'
+case 76: return 5; 
+break;
+case 77: console.log("INVALID: " + yy_.yytext); return 'INVALID'
 break;
 }
 },
-rules: [/^(?:\s+)/,/^(?:\/\*([^*]|[\r\n]|(\*+([^*\/]|[\r\n])))*\*+\/)/,/^(?:\/\/.*)/,/^(?:var\b)/,/^(?:signal\b)/,/^(?:private\b)/,/^(?:input\b)/,/^(?:output\b)/,/^(?:linearCombination\b)/,/^(?:component\b)/,/^(?:template\b)/,/^(?:function\b)/,/^(?:if\b)/,/^(?:else\b)/,/^(?:for\b)/,/^(?:while\b)/,/^(?:compute\b)/,/^(?:do\b)/,/^(?:return\b)/,/^(?:include\b)/,/^(?:0x[0-9A-Fa-f]*)/,/^(?:[0-9]+)/,/^(?:[a-zA-Z][a-zA-Z$_0-9]*)/,/^(?:"[^"]+")/,/^(?:==>)/,/^(?:<==)/,/^(?:-->)/,/^(?:<--)/,/^(?:===)/,/^(?:>>=)/,/^(?:<<=)/,/^(?:&&)/,/^(?:\|\|)/,/^(?:==)/,/^(?:<=)/,/^(?:>=)/,/^(?:!=)/,/^(?:>>)/,/^(?:<<)/,/^(?:\*\*)/,/^(?:\+\+)/,/^(?:--)/,/^(?:\+=)/,/^(?:-=)/,/^(?:\*=)/,/^(?:\/=)/,/^(?:%=)/,/^(?:\|=)/,/^(?:&=)/,/^(?:\^=)/,/^(?:=)/,/^(?:\+)/,/^(?:-)/,/^(?:\*)/,/^(?:\/)/,/^(?:\\)/,/^(?:%)/,/^(?:\^)/,/^(?:&)/,/^(?:\|)/,/^(?:!)/,/^(?:<)/,/^(?:>)/,/^(?:!)/,/^(?:\?)/,/^(?::)/,/^(?:\()/,/^(?:\))/,/^(?:\[)/,/^(?:\])/,/^(?:\{)/,/^(?:\})/,/^(?:;)/,/^(?:,)/,/^(?:\.)/,/^(?:$)/,/^(?:.)/],
-conditions: {"INITIAL":{"rules":[0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76],"inclusive":true}}
+rules: [/^(?:\s+)/,/^(?:\/\*([^*]|[\r\n]|(\*+([^*\/]|[\r\n])))*\*+\/)/,/^(?:\/\/.*)/,/^(?:var\b)/,/^(?:signal\b)/,/^(?:private\b)/,/^(?:input\b)/,/^(?:output\b)/,/^(?:linearCombination\b)/,/^(?:component\b)/,/^(?:template\b)/,/^(?:function\b)/,/^(?:if\b)/,/^(?:else\b)/,/^(?:for\b)/,/^(?:while\b)/,/^(?:compute\b)/,/^(?:do\b)/,/^(?:return\b)/,/^(?:include\b)/,/^(?:0x[0-9A-Fa-f]*)/,/^(?:[0-9]+)/,/^(?:[a-zA-Z][a-zA-Z$_0-9]*)/,/^(?:"[^"]+")/,/^(?:==>)/,/^(?:<==)/,/^(?:-->)/,/^(?:<--)/,/^(?:===)/,/^(?:>>=)/,/^(?:<<=)/,/^(?:&&)/,/^(?:\|\|)/,/^(?:==)/,/^(?:<=)/,/^(?:>=)/,/^(?:!=)/,/^(?:>>)/,/^(?:<<)/,/^(?:\*\*)/,/^(?:\+\+)/,/^(?:--)/,/^(?:\+=)/,/^(?:-=)/,/^(?:\*=)/,/^(?:\/=)/,/^(?:%=)/,/^(?:\|=)/,/^(?:&=)/,/^(?:\^=)/,/^(?:=)/,/^(?:\+)/,/^(?:-)/,/^(?:\*)/,/^(?:\/)/,/^(?:\\)/,/^(?:%)/,/^(?:\^)/,/^(?:&)/,/^(?:\|)/,/^(?:!)/,/^(?:~)/,/^(?:<)/,/^(?:>)/,/^(?:!)/,/^(?:\?)/,/^(?::)/,/^(?:\()/,/^(?:\))/,/^(?:\[)/,/^(?:\])/,/^(?:\{)/,/^(?:\})/,/^(?:;)/,/^(?:,)/,/^(?:\.)/,/^(?:$)/,/^(?:.)/],
+conditions: {"INITIAL":{"rules":[0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77],"inclusive":true}}
 });
 return lexer;
 })();

src/c_gen.js

@@ -154,15 +154,15 @@ function gen(ctx, ast) {
         } else if (ast.op == "*=") {
             return genVarMulAssignement(ctx, ast);
         } else if (ast.op == "+") {
-            return genBinaryOp(ctx, ast, "add");
+            return genOp(ctx, ast, "add", 2);
         } else if (ast.op == "-") {
-            return genBinaryOp(ctx, ast, "sub");
+            return genOp(ctx, ast, "sub", 2);
         } else if (ast.op == "UMINUS") {
-            return genUMinus(ctx, ast);
+            return genOp(ctx, ast, "neg", 1);
         } else if (ast.op == "*") {
-            return genBinaryOp(ctx, ast, "mul");
+            return genOp(ctx, ast, "mul", 2);
         } else if (ast.op == "%") {
-            return genBinaryOp(ctx, ast, "mod");
+            return genOp(ctx, ast, "mod", 2);
         } else if (ast.op == "PLUSPLUSRIGHT") {
             return genOpOp(ctx, ast, "add", "RIGHT");
         } else if (ast.op == "PLUSPLUSLEFT") {
@@ -172,33 +172,41 @@ function gen(ctx, ast) {
         } else if (ast.op == "MINUSMINUSLEFT") {
             return genOpOp(ctx, ast, "sub", "LEFT");
         } else if (ast.op == "**") {
-            return genExp(ctx, ast);
+            return genOp(ctx, ast, "pow", 2);
         } else if (ast.op == "/") {
-            return genBinaryOp(ctx, ast, "div");
+            return genOp(ctx, ast, "div", 2);
         } else if (ast.op == "\\") {
-            return genBinaryOp(ctx, ast, "idiv");
+            return genOp(ctx, ast, "idiv", 2);
         } else if (ast.op == "&") {
-            return genBAnd(ctx, ast);
+            return genOp(ctx, ast, "band", 2);
+        } else if (ast.op == "|") {
+            return genOp(ctx, ast, "bor", 2);
+        } else if (ast.op == "^") {
+            return genOp(ctx, ast, "bxor", 2);
+        } else if (ast.op == "~") {
+            return genOp(ctx, ast, "bnot", 1);
         } else if (ast.op == "&&") {
-            return genAnd(ctx, ast);
+            return genOp(ctx, ast, "land", 2);
         } else if (ast.op == "||") {
-            return genOr(ctx, ast);
+            return genOp(ctx, ast, "lor", 2);
+        } else if (ast.op == "!") {
+            return genOp(ctx, ast, "lnot", 1);
         } else if (ast.op == "<<") {
-            return genShl(ctx, ast);
+            return genOp(ctx, ast, "shl", 2);
         } else if (ast.op == ">>") {
-            return genShr(ctx, ast);
+            return genOp(ctx, ast, "shr", 2);
         } else if (ast.op == "<") {
-            return genBinaryOp(ctx, ast, "lt");
+            return genOp(ctx, ast, "lt", 2);
         } else if (ast.op == ">") {
-            return genBinaryOp(ctx, ast, "gt");
+            return genOp(ctx, ast, "gt", 2);
         } else if (ast.op == "<=") {
-            return genBinaryOp(ctx, ast, "leq");
+            return genOp(ctx, ast, "leq", 2);
         } else if (ast.op == ">=") {
-            return genBinaryOp(ctx, ast, "geq");
+            return genOp(ctx, ast, "geq", 2);
         } else if (ast.op == "==") {
-            return genBinaryOp(ctx, ast, "eq");
+            return genOp(ctx, ast, "eq", 2);
         } else if (ast.op == "!=") {
-            return genBinaryOp(ctx, ast, "neq");
+            return genOp(ctx, ast, "neq", 2);
         } else if (ast.op == "?") {
             return genTerCon(ctx, ast);
         } else {
@@ -1037,76 +1045,56 @@ function genOpOp(ctx, ast, op, lr) {
     }
 }
 
-function genBinaryOp(ctx, ast, op) {
-    let aRef = gen(ctx, ast.values[0]);
-    if (ctx.error) return;
-    let a = ctx.refs[aRef];
+function genOp(ctx, ast, op, nOps) {
+    const vals = [];
+    const valRefs = [];
 
-    let bRef = gen(ctx, ast.values[1]);
-    if (ctx.error) return;
-    let b = ctx.refs[bRef];
+    var anyUsed=false;
 
-    if ((!a.used)&&(!utils.isDefined(a.value))) return ctx.throwError(ast, "Using a not assigned varialble: ");
-    if ((!b.used)&&(!utils.isDefined(b.value))) return ctx.throwError(ast, "Using a not assigned varialble: ");
-    if (!utils.sameSizes(a.sizes, [1,0])) return ctx.throwError(ast, "Operation cannot be done on an array");
-    if (!utils.sameSizes(b.sizes, [1,0])) return ctx.throwError(ast, "Operation cannot be done on an array");
+    for (let i=0; i<nOps; i++) {
+        const  ref = gen(ctx, ast.values[i]);
+        if (ctx.error) return;
+        let v = ctx.refs[ref];
+        valRefs.push(ref);
+        vals.push(v);
+
+        if (!utils.sameSizes(v.sizes, [1,0])) return ctx.throwError(ast, "Operation cannot be done on an array");
+        if (  (!v.used)
+            &&(  (!utils.isDefined(v.value))
+               ||(!utils.isDefined(v.value[0]))))
+            return ctx.throwError(ast, "Using a not assigned varialble: ");
+
+        if (v.used) anyUsed=true;
+    }
 
     let rRef;
-    if (a.used || b.used) {
-        if (!a.used) {
-            aRef = instantiateConstant(ctx, a.value);
-            a = ctx.refs[aRef];
-        }
-        if (!b.used) {
-            bRef = instantiateConstant(ctx, b.value);
-            b = ctx.refs[bRef];
+    if (anyUsed) {
+        for (let i=0; i<nOps; i++) {
+            if (!vals[i].used) {
+                valRefs[i] = instantiateConstant(ctx, vals[i].value);
+                vals[i] = ctx.refs[valRefs[i]];
+            }
         }
 
         rRef = newRef(ctx, "BIGINT", "_tmp");
         instantiateRef(ctx, rRef);
         const r = ctx.refs[rRef];
-        ctx.code += `ctx->field->${op}(${r.label},${a.label}, ${b.label});\n`;
+        let c = `ctx->field->${op}(${r.label}`;
+        for (let i=0; i<nOps; i++) {
+            c+=`,${vals[i].label}`;
+        }
+        c += ");\n";
+        ctx.code += c;
     } else {
-        rRef = newRef(ctx, "BIGINT", "_tmp", ctx.field[op](a.value[0], b.value[0]));
+        const params = [];
+        for (let i=0; i<nOps; i++) {
+            params.push(vals[i].value[0]);
+        }
+        rRef = newRef(ctx, "BIGINT", "_tmp", ctx.field[op](...params));
     }
     return rRef;
 }
 
-
-function genSub(ctx, ast) {
-    const a = gen(ctx, ast.values[0]);
-    if (ctx.error) return;
-    const b = gen(ctx, ast.values[1]);
-    if (ctx.error) return;
-    return `bigInt(${a}).add(__P__).sub(bigInt(${b})).mod(__P__)`;
-}
-
-function genDiv(ctx, ast) {
-    const a = gen(ctx, ast.values[0]);
-    if (ctx.error) return;
-    const b = gen(ctx, ast.values[1]);
-    if (ctx.error) return;
-
-    return `bigInt(${a}).mul( bigInt(${b}).inverse(__P__) ).mod(__P__)`;
-}
-
-function genIDiv(ctx, ast) {
-    const a = gen(ctx, ast.values[0]);
-    if (ctx.error) return;
-    const b = gen(ctx, ast.values[1]);
-    if (ctx.error) return;
-
-    return `bigInt(${a}).div( bigInt(${b}))`;
-}
-
-function genExp(ctx, ast) {
-    const a = gen(ctx, ast.values[0]);
-    if (ctx.error) return;
-    const b = gen(ctx, ast.values[1]);
-    if (ctx.error) return;
-    return `bigInt(${a}).modPow(bigInt(${b}), __P__)`;
-}
-
 function genBAnd(ctx, ast) {
     const a = gen(ctx, ast.values[0]);
     if (ctx.error) return;
@@ -1147,20 +1135,6 @@ function genShr(ctx, ast) {
     return `bigInt(${b}).greater(bigInt(256)) ? 0 : bigInt(${a}).shr(bigInt(${b})).and(__MASK__)`;
 }
 
-function genMod(ctx, ast) {
-    const a = gen(ctx, ast.values[0]);
-    if (ctx.error) return;
-    const b = gen(ctx, ast.values[1]);
-    if (ctx.error) return;
-    return `bigInt(${a}).mod(bigInt(${b}))`;
-}
-
-function genUMinus(ctx, ast) {
-    const a = gen(ctx, ast.values[0]);
-    if (ctx.error) return;
-    return `__P__.sub(bigInt(${a})).mod(__P__)`;
-}
-
 function genTerCon(ctx, ast) {
     const a = gen(ctx, ast.values[0]);
     if (ctx.error) return;

src/exec.js

@@ -92,10 +92,18 @@ function exec(ctx, ast) {
             return execExp(ctx, ast);
         } else if (ast.op == "&") {
             return execBAnd(ctx, ast);
+        } else if (ast.op == "|") {
+            return execBOr(ctx, ast);
+        } else if (ast.op == "^") {
+            return execBXor(ctx, ast);
+        } else if (ast.op == "~") {
+            return execBNot(ctx, ast);
         } else if (ast.op == "&&") {
             return execAnd(ctx, ast);
         } else if (ast.op == "||") {
             return execOr(ctx, ast);
+        } else if (ast.op == "!") {
+            return execLNot(ctx, ast);
         } else if (ast.op == "<<") {
             return execShl(ctx, ast);
         } else if (ast.op == ">>") {
@@ -854,7 +862,6 @@ function execNeq(ctx, ast) {
     };
 }
 
-
 function execBAnd(ctx, ast) {
     const a = exec(ctx, ast.values[0]);
     if (ctx.error) return;
@@ -869,6 +876,51 @@ function execBAnd(ctx, ast) {
     };
 }
 
+function execBOr(ctx, ast) {
+    const a = exec(ctx, ast.values[0]);
+    if (ctx.error) return;
+    if (a.type != "NUMBER") return { type: "NUMBER" };
+    const b = exec(ctx, ast.values[1]);
+    if (ctx.error) return;
+    if (b.type != "NUMBER") return { type: "NUMBER" };
+    if (!a.value || !b.value) return { type: "NUMBER" };
+    return {
+        type: "NUMBER",
+        value: a.value.or(b.value).and(__MASK__)
+    };
+}
+
+function execBXor(ctx, ast) {
+    const a = exec(ctx, ast.values[0]);
+    if (ctx.error) return;
+    if (a.type != "NUMBER") return { type: "NUMBER" };
+    const b = exec(ctx, ast.values[1]);
+    if (ctx.error) return;
+    if (b.type != "NUMBER") return { type: "NUMBER" };
+    if (!a.value || !b.value) return { type: "NUMBER" };
+    return {
+        type: "NUMBER",
+        value: a.value.xor(b.value).and(__MASK__)
+    };
+}
+
+function execBNot(ctx, ast) {
+    const a = exec(ctx, ast.values[0]);
+    if (ctx.error) return;
+    if (a.type != "NUMBER") return { type: "NUMBER" };
+    if (!a.value) return { type: "NUMBER" };
+
+    const res = lc.negate(a);
+    if (res.type == "ERROR") return error(ctx, ast, res.errStr);
+
+    return {
+        type: "NUMBER",
+        value: a.value.xor(__MASK__).and(__MASK__)
+    };
+}
+
+
+
 function execAnd(ctx, ast) {
     const a = exec(ctx, ast.values[0]);
     if (ctx.error) return;
@@ -897,6 +949,18 @@ function execOr(ctx, ast) {
     };
 }
 
+function execLNot(ctx, ast) {
+    const a = exec(ctx, ast.values[0]);
+    if (ctx.error) return;
+    if (a.type != "NUMBER") return { type: "NUMBER" };
+    if (!a.value) return { type: "NUMBER" };
+    return {
+        type: "NUMBER",
+        value: (a.value.eq(0)) ? bigInt(1) : bigInt(0)
+    };
+}
+
+
 function execShl(ctx, ast) {
     const a = exec(ctx, ast.values[0]);
     if (ctx.error) return;

src/zqfield.js

@@ -1,16 +1,32 @@
 const bigInt = require("big-integer");
+const assert = require("assert");
 
 module.exports = class ZqField {
     constructor(p) {
         this.p = p;
+        this.bitLength = p.bitLength();
+        this.mask = bigInt.one.shiftLeft(this.bitLength - 1).minus(bigInt.one);
     }
 
     add(a, b) {
-        return a.add(b).mod(this.p);
+        let res = a.add(b);
+        if (res.geq(this.p)) {
+            res = res.minsu(this.p);
+        }
+        return res;
     }
 
     sub(a, b) {
-        return a.minus(b).mod(this.p);
+        if (a.geq(b)) {
+            return a.minus(b);
+        } else {
+            return this.p.minus(b.minus(a));
+        }
+    }
+
+    neg(a) {
+        if (a.isZero()) return a;
+        return this.p.minus(a);
     }
 
     mul(a, b) {
@@ -46,6 +62,7 @@ module.exports = class ZqField {
     }
 
     idiv(a, b) {
+        assert(!b.isZero(), "Division by zero");
         return a.divide(b);
     }
 
@@ -53,5 +70,46 @@ module.exports = class ZqField {
         return a.mod(b);
     }
 
+    pow(a, b) {
+        return a.modPow(b, this.p);
+    }
+
+    band(a, b) {
+        return a.and(b).and(this.mask);
+    }
+
+    bor(a, b) {
+        return a.or(b).and(this.mask);
+    }
+
+    bxor(a, b) {
+        return a.xor(b).and(this.mask);
+    }
+
+    bnot(a) {
+        return a.xor(this.mask).and(this.mask);
+    }
+
+    shl(a, b) {
+        if (b.geq(this.bitLength)) return bigInt.zero;
+        return a.shiftLeft(b).and(this.mask);
+    }
+
+    shr(a, b) {
+        if (b.geq(this.bitLength)) return bigInt.zero;
+        return a.shiftRight(b).and(this.mask);
+    }
+
+    land(a, b) {
+        return (a.isZero() || b.isZero) ? bigInt.zero : bigInt.one;
+    }
+
+    lor(a, b) {
+        return (a.isZero() && b.isZero) ? bigInt.zero : bigInt.one;
+    }
+
+    lnot(a) {
+        return a.isZero() ? bigInt.one : bigInt.zero;
+    }
 };
 

test/basiccases.js

@@ -202,4 +202,48 @@ describe("basic cases", function () {
             ]
         );
     });
+    it("ops3", async () => {
+        await doTest(
+            "ops3.circom",
+            [
+                [{in: [-2, 2]}, {neg1: 2,neg2: -2, pow: 4}],
+                [{in: [0, 1]}, {neg1: 0, neg2: -1, pow: 0}],
+                [{in: [ 1,-1]}, {neg1: -1, neg2: 1, pow: 1}],
+            ]
+        );
+    });
+    it("Comparation ops", async () => {
+        await doTest(
+            "opscmp.circom",
+            [
+                [{in: [ 8, 9]}, {lt: 1, leq: 1, eq:0, neq:1, geq: 0, gt:0}],
+                [{in: [-2,-2]}, {lt: 0, leq: 1, eq:1, neq:0, geq: 1, gt:0}],
+                [{in: [-1,-2]}, {lt: 0, leq: 0, eq:0, neq:1, geq: 1, gt:1}],
+                [{in: [ 1,-1]}, {lt: 1, leq: 1, eq:0, neq:1, geq: 0, gt:0}],  // In mod, negative values are higher than positive.
+            ]
+        );
+    });
+    it("Bit ops", async () => {
+        const mask = bigInt("14474011154664524427946373126085988481658748083205070504932198000989141204991");
+        const m1m = bigInt("7414231717174750794300032619171286606889616317210963838766006185586667290624");
+        await doTest(
+            "opsbit.circom",
+            [
+                [{in: [ 5, 3]}, {and: 1, or: 7, xor:6, not1:mask.minus(5), shl: 40, shr:0}],
+                [{in: [ 0, 0]}, {and: 0, or: 0, xor:0, not1:mask, shl: 0, shr:0}],
+                [{in: [-1, 1]}, {and: 0, or: m1m.add(bigInt.one), xor:m1m.add(bigInt.one), not1:mask.minus(m1m), shl: m1m.shiftLeft(1).and(mask), shr:__P__.shiftRight(1).and(mask)}],
+            ]
+        );
+    });
+    it("Logical ops", async () => {
+        await doTest(
+            "opslog.circom",
+            [
+                [{in: [ 5, 0]}, {and: 0, or: 1, not1:0}],
+                [{in: [ 0, 1]}, {and: 0, or: 1, not1:1}],
+                [{in: [-1, 9]}, {and: 1, or: 1, not1:0}],
+                [{in: [ 0, 0]}, {and: 0, or: 0, not1:1}],
+            ]
+        );
+    });
 });

test/circuits/ops3.circom

@@ -0,0 +1,12 @@
+template Ops3() {
+    signal input in[2];
+    signal output neg1;
+    signal output neg2;
+    signal output pow;
+
+    neg1 <-- -in[0];
+    neg2 <-- -in[1];
+    pow  <-- in[0] ** in[1];
+}
+
+component main = Ops3();

test/circuits/opsbit.circom

@@ -0,0 +1,18 @@
+template OpsBit() {
+    signal input in[2];
+    signal output and;
+    signal output or;
+    signal output xor;
+    signal output not1;
+    signal output shl;
+    signal output shr;
+
+    and  <-- in[0] & in[1];
+    or   <-- in[0] | in[1];
+    xor  <-- in[0] ^ in[1];
+    not1 <-- ~in[0];
+    shl  <-- in[0] << in[1];
+    shr  <-- in[0] >> in[1];
+}
+
+component main = OpsBit();

test/circuits/opscmp.circom

@@ -0,0 +1,18 @@
+template OpsCmp() {
+    signal input in[2];
+    signal output lt;
+    signal output leq;
+    signal output eq;
+    signal output neq;
+    signal output geq;
+    signal output gt;
+
+    lt   <-- in[0] <  in[1];
+    leq  <-- in[0] <= in[1];
+    eq   <-- in[0] == in[1];
+    neq  <-- in[0] != in[1];
+    geq  <-- in[0] >= in[1];
+    gt   <-- in[0] >  in[1];
+}
+
+component main = OpsCmp();

test/circuits/opslog.circom

@@ -0,0 +1,12 @@
+template OpsLog() {
+    signal input in[2];
+    signal output and;
+    signal output or;
+    signal output not1;
+
+    and  <-- in[0] && in[1];
+    or   <-- in[0] || in[1];
+    not1 <-- !in[0];
+}
+
+component main = OpsLog();