Further support for floating-point. Literals with exponents work
and literals with the 'f32' or 'f64' suffixes work as well. In addition, logging things with the f32 or f64 type works. (float is still assumed to be a synonym for f64).
This commit is contained in:
parent
d56971d5b4
commit
23e23bd762
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@ -486,7 +486,8 @@ rustllvm/%.o: rustllvm/%.cpp $(MKFILES)
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# Float doesn't work in boot
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FLOAT_XFAILS := test/run-pass/float.rs
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FLOAT_XFAILS := test/run-pass/float.rs \
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test/run-pass/float2.rs
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# Temporarily xfail tests broken by the nominal-tags change.
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@ -419,7 +419,8 @@ self: $(CFG_RUSTC)
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# Float doesn't work in boot
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FLOAT_XFAILS := test/run-pass/float.rs
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FLOAT_XFAILS := test/run-pass/float.rs \
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test/run-pass/float2.rs
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# Temporarily xfail tests broken by the nominal-tags change.
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@ -256,6 +256,7 @@ tag lit_ {
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lit_uint(uint);
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lit_mach_int(ty_mach, int);
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lit_float(str);
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lit_mach_float(ty_mach, str);
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lit_nil;
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lit_bool(bool);
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}
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@ -3,6 +3,9 @@ import std._str;
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import std._int;
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import std.map;
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import std.map.hashmap;
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import std.option;
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import std.option.some;
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import std.option.none;
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import util.common;
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import util.common.new_str_hash;
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@ -333,6 +336,27 @@ impure fn scan_dec_digits(reader rdr) -> int {
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ret accum_int;
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}
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impure fn scan_exponent(reader rdr) -> option.t[int] {
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auto c = rdr.curr();
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auto sign = 1;
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if (c == 'e' || c == 'E') {
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rdr.bump();
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c = rdr.curr();
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if (c == '-') {
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sign = -1;
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rdr.bump();
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} else if (c == '+') {
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rdr.bump();
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}
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auto exponent = scan_dec_digits(rdr);
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ret(some(sign * exponent));
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}
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else {
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ret none[int];
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}
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}
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impure fn scan_number(mutable char c, reader rdr) -> token.token {
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auto accum_int = 0;
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auto n = rdr.next();
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@ -418,17 +442,54 @@ impure fn scan_number(mutable char c, reader rdr) -> token.token {
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ret token.LIT_UINT(accum_int as uint);
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}
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}
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n = rdr.curr();
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if(n == '.') {
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c = rdr.curr();
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if (c == '.') {
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// Parse a floating-point number.
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rdr.bump();
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auto accum_int1 = scan_dec_digits(rdr);
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ret token.LIT_FLOAT(_int.to_str(accum_int, 10u) + "."
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+ _int.to_str(accum_int1, 10u));
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// FIXME: Parse exponent.
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auto base_str = _int.to_str(accum_int, 10u) + "."
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+ _int.to_str(accum_int1, 10u);
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c = rdr.curr();
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auto exponent_str = "";
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let option.t[int] maybe_exponent = scan_exponent(rdr);
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alt(maybe_exponent) {
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case(some[int](?i)) {
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exponent_str = "e" + _int.to_str(i, 10u);
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}
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case(none[int]) {
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}
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}
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c = rdr.curr();
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if (c == 'f') {
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rdr.bump();
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c = rdr.curr();
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n = rdr.next();
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if (c == '3' && n == '2') {
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rdr.bump(); rdr.bump();
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ret token.LIT_MACH_FLOAT(util.common.ty_f32,
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base_str + exponent_str);
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}
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else if (c == '6' && n == '4') {
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rdr.bump(); rdr.bump();
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ret token.LIT_MACH_FLOAT(util.common.ty_f64,
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base_str + exponent_str);
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}
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}
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else {
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ret token.LIT_FLOAT(base_str + exponent_str);
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}
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}
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else {
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ret token.LIT_INT(accum_int);
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auto maybe_exponent = scan_exponent(rdr);
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alt(maybe_exponent) {
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case(some[int](?i)) {
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ret token.LIT_FLOAT(_int.to_str(accum_int, 10u)
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+ "e" + _int.to_str(i, 10u));
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}
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case(none[int]) {
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ret token.LIT_INT(accum_int);
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}
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}
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}
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@ -545,6 +545,10 @@ impure fn parse_lit(parser p) -> ast.lit {
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p.bump();
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lit = ast.lit_mach_int(tm, i);
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}
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case (token.LIT_MACH_FLOAT(?tm, ?s)) {
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p.bump();
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lit = ast.lit_mach_float(tm, s);
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}
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case (token.LIT_CHAR(?c)) {
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p.bump();
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lit = ast.lit_char(c);
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@ -127,6 +127,7 @@ tag token {
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LIT_UINT(uint);
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LIT_MACH_INT(ty_mach, int);
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LIT_FLOAT(str);
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LIT_MACH_FLOAT(ty_mach, str);
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LIT_STR(str);
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LIT_CHAR(char);
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LIT_BOOL(bool);
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@ -763,6 +763,10 @@ fn C_float(str s) -> ValueRef {
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ret llvm.LLVMConstRealOfString(T_float(), _str.buf(s));
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}
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fn C_floating(str s, TypeRef t) -> ValueRef {
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ret llvm.LLVMConstRealOfString(t, _str.buf(s));
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}
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fn C_nil() -> ValueRef {
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// NB: See comment above in T_void().
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ret C_integral(0, T_i1());
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@ -2338,6 +2342,14 @@ fn trans_lit(@crate_ctxt cx, &ast.lit lit, &ast.ann ann) -> ValueRef {
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case(ast.lit_float(?fs)) {
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ret C_float(fs);
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}
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case(ast.lit_mach_float(?tm, ?s)) {
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auto t = T_float();
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alt(tm) {
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case(common.ty_f32) { t = T_f32(); }
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case(common.ty_f64) { t = T_f64(); }
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}
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ret C_floating(s, t);
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}
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case (ast.lit_char(?c)) {
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ret C_integral(c as int, T_char());
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}
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@ -2719,7 +2731,7 @@ fn trans_eager_binop(@block_ctxt cx, ast.binop op, @ty.t intype,
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ValueRef lhs, ValueRef rhs) -> result {
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auto is_float = false;
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alt(intype.struct) {
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alt (intype.struct) {
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case (ty.ty_float) {
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is_float = true;
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}
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@ -2727,7 +2739,7 @@ fn trans_eager_binop(@block_ctxt cx, ast.binop op, @ty.t intype,
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is_float = false;
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}
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}
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alt (op) {
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case (ast.add) {
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if (ty.type_is_sequence(intype)) {
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@ -2749,7 +2761,7 @@ fn trans_eager_binop(@block_ctxt cx, ast.binop op, @ty.t intype,
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}
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}
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case (ast.mul) {
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case (ast.mul) {
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if (is_float) {
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ret res(cx, cx.build.FMul(lhs, rhs));
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}
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@ -4582,13 +4594,33 @@ fn trans_log(@block_ctxt cx, @ast.expr e) -> result {
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auto sub = trans_expr(cx, e);
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auto e_ty = ty.expr_ty(e);
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alt (e_ty.struct) {
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case(ty.ty_float) {
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auto tmp = sub.bcx.build.Alloca(T_float());
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sub.bcx.build.Store(sub.val, tmp);
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sub = res(sub.bcx, tmp);
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if (ty.type_is_fp(e_ty)) {
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let TypeRef tr;
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let bool is32bit = false;
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alt (e_ty.struct) {
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case (ty.ty_machine(util.common.ty_f32)) {
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tr = T_f32();
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is32bit = true;
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}
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case (ty.ty_machine(util.common.ty_f64)) {
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tr = T_f64();
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}
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case (_) {
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tr = T_float();
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}
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}
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if (is32bit) {
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ret trans_upcall(sub.bcx,
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"upcall_log_float",
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vec(sub.val));
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} else {
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auto tmp = sub.bcx.build.Alloca(tr);
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sub.bcx.build.Store(sub.val, tmp);
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auto v = vp2i(sub.bcx, tmp);
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ret trans_upcall(sub.bcx,
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"upcall_log_double",
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vec(v));
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}
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case(_) { }
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}
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alt (e_ty.struct) {
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"upcall_log_str",
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vec(v));
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}
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case (ty.ty_float) {
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auto v = vp2i(sub.bcx, sub.val);
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ret trans_upcall(sub.bcx,
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"upcall_log_float",
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vec(v));
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}
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case (_) {
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ret trans_upcall(sub.bcx,
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"upcall_log_int",
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@ -1497,7 +1497,9 @@ fn check_lit(@ast.lit lit) -> @ty.t {
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case (ast.lit_str(_)) { sty = ty.ty_str; }
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case (ast.lit_char(_)) { sty = ty.ty_char; }
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case (ast.lit_int(_)) { sty = ty.ty_int; }
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case (ast.lit_float(_)) { sty = ty.ty_float; }
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case (ast.lit_float(_)) { sty = ty.ty_float; }
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case (ast.lit_mach_float(?tm, _))
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{ sty = ty.ty_machine(tm); }
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case (ast.lit_uint(_)) { sty = ty.ty_uint; }
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case (ast.lit_mach_int(?tm, _)) { sty = ty.ty_machine(tm); }
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case (ast.lit_nil) { sty = ty.ty_nil; }
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@ -40,7 +40,14 @@ void upcall_log_int(rust_task *task, int32_t i) {
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}
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extern "C" CDECL
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void upcall_log_float(rust_task *task, double *f) {
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void upcall_log_float(rust_task *task, float f) {
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LOG_UPCALL_ENTRY(task);
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task->log(rust_log::UPCALL | rust_log::ULOG,
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"rust: %12.12f", f);
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}
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extern "C" CDECL
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void upcall_log_double(rust_task *task, double *f) {
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LOG_UPCALL_ENTRY(task);
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task->log(rust_log::UPCALL | rust_log::ULOG,
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"rust: %12.12f", *f);
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@ -0,0 +1,23 @@
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fn main() {
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auto a = 1.5e6;
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auto b = 1.5E6;
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auto c = 1e6;
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auto d = 1E6;
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auto e = 3.0f32;
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auto f = 5.9f64;
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auto g = 1.e6f32;
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auto h = 1.0e7f64;
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auto i = 1.0E7f64;
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auto j = 3.1e+9;
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auto k = 3.2e-10;
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check(a == b);
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check(c < b);
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check(c == d);
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check(e < g);
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check(f < h);
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check(g == 1000000.0f32);
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check(h == i);
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check(j > k);
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check(k < a);
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}
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