Commit a024aff932
Changed files (10)
lib
std
special
src
test
behavior
lib/std/special/compiler_rt/addXf3.zig
@@ -232,8 +232,8 @@ fn normalize_f80(exp: *i32, significand: *u80) void {
}
pub fn __addxf3(a: f80, b: f80) callconv(.C) f80 {
- var a_rep align(16) = @ptrCast(*const std.math.F80Repr, &a).*;
- var b_rep align(16) = @ptrCast(*const std.math.F80Repr, &b).*;
+ var a_rep = std.math.break_f80(a);
+ var b_rep = std.math.break_f80(b);
var a_exp: i32 = a_rep.exp & 0x7FFF;
var b_exp: i32 = b_rep.exp & 0x7FFF;
@@ -257,7 +257,7 @@ pub fn __addxf3(a: f80, b: f80) callconv(.C) f80 {
std.debug.assert(a_rep.fraction & significand_mask != 0);
// NaN + anything = qNaN
a_rep.fraction |= qnan_bit;
- return @ptrCast(*const f80, &a_rep).*;
+ return std.math.make_f80(a_rep);
}
}
if (b_exp == max_exp) {
@@ -268,7 +268,7 @@ pub fn __addxf3(a: f80, b: f80) callconv(.C) f80 {
std.debug.assert(b_rep.fraction & significand_mask != 0);
// anything + NaN = qNaN
b_rep.fraction |= qnan_bit;
- return @ptrCast(*const f80, &b_rep).*;
+ return std.math.make_f80(b_rep);
}
}
@@ -279,7 +279,7 @@ pub fn __addxf3(a: f80, b: f80) callconv(.C) f80 {
if (b_zero) {
// but we need to get the sign right for zero + zero
a_rep.exp &= b_rep.exp;
- return @ptrCast(*const f80, &a_rep).*;
+ return std.math.make_f80(a_rep);
} else {
return b;
}
@@ -359,7 +359,7 @@ pub fn __addxf3(a: f80, b: f80) callconv(.C) f80 {
if (a_exp >= max_exp) {
a_rep.exp = max_exp | result_sign;
a_rep.fraction = int_bit; // integer bit is set for +/-inf
- return @ptrCast(*const f80, &a_rep).*;
+ return std.math.make_f80(a_rep);
}
if (a_exp <= 0) {
@@ -387,13 +387,13 @@ pub fn __addxf3(a: f80, b: f80) callconv(.C) f80 {
a_rep.fraction = @truncate(u64, a_int);
a_rep.exp = @truncate(u16, a_int >> significand_bits);
- return @ptrCast(*const f80, &a_rep).*;
+ return std.math.make_f80(a_rep);
}
pub fn __subxf3(a: f80, b: f80) callconv(.C) f80 {
- var b_rep align(16) = @ptrCast(*const std.math.F80Repr, &b).*;
+ var b_rep = std.math.break_f80(b);
b_rep.exp ^= 0x8000;
- return __addxf3(a, @ptrCast(*const f80, &b_rep).*);
+ return __addxf3(a, std.math.make_f80(b_rep));
}
test {
lib/std/special/compiler_rt/compareXf2.zig
@@ -147,8 +147,8 @@ pub fn __gtdf2(a: f64, b: f64) callconv(.C) i32 {
// Comparison between f80
pub inline fn cmp_f80(comptime RT: type, a: f80, b: f80) RT {
- const a_rep = @ptrCast(*const std.math.F80Repr, &a).*;
- const b_rep = @ptrCast(*const std.math.F80Repr, &b).*;
+ const a_rep = std.math.break_f80(a);
+ const b_rep = std.math.break_f80(b);
const sig_bits = std.math.floatMantissaBits(f80);
const int_bit = 0x8000000000000000;
const sign_bit = 0x8000;
lib/std/special/compiler_rt/extend_f80.zig
@@ -41,7 +41,7 @@ inline fn extendF80(comptime src_t: type, a: std.meta.Int(.unsigned, @typeInfo(s
const src_qnan = 1 << (src_sig_bits - 1);
const src_nan_code = src_qnan - 1;
- var dst: std.math.F80Repr align(16) = undefined;
+ var dst: std.math.F80 = undefined;
// Break a into a sign and representation of the absolute value
const a_abs = a & src_abs_mask;
@@ -83,7 +83,7 @@ inline fn extendF80(comptime src_t: type, a: std.meta.Int(.unsigned, @typeInfo(s
}
dst.exp |= sign;
- return @ptrCast(*const f80, &dst).*;
+ return std.math.make_f80(dst);
}
pub fn __extendxftf2(a: f80) callconv(.C) f128 {
@@ -99,7 +99,7 @@ pub fn __extendxftf2(a: f80) callconv(.C) f128 {
const dst_min_normal = @as(u128, 1) << dst_sig_bits;
// Break a into a sign and representation of the absolute value
- var a_rep = @ptrCast(*const std.math.F80Repr, &a).*;
+ var a_rep = std.math.break_f80(a);
const sign = a_rep.exp & 0x8000;
a_rep.exp &= 0x7FFF;
var abs_result: u128 = undefined;
lib/std/special/compiler_rt/trunc_f80.zig
@@ -42,7 +42,7 @@ inline fn trunc(comptime dst_t: type, a: f80) dst_t {
const dst_nan_mask = dst_qnan - 1;
// Break a into a sign and representation of the absolute value
- var a_rep = @ptrCast(*const std.math.F80Repr, &a).*;
+ var a_rep = std.math.break_f80(a);
const sign = a_rep.exp & 0x8000;
a_rep.exp &= 0x7FFF;
a_rep.fraction &= 0x7FFFFFFFFFFFFFFF;
@@ -125,7 +125,7 @@ pub fn __trunctfxf2(a: f128) callconv(.C) f80 {
const a_abs = a_rep & src_abs_mask;
const sign: u16 = if (a_rep & src_sign_mask != 0) 0x8000 else 0;
- var res: std.math.F80Repr align(16) = undefined;
+ var res: std.math.F80 = undefined;
if (a_abs > src_inf) {
// a is NaN.
@@ -155,5 +155,5 @@ pub fn __trunctfxf2(a: f128) callconv(.C) f80 {
}
res.exp |= sign;
- return @ptrCast(*const f80, &res).*;
+ return std.math.make_f80(res);
}
lib/std/math.zig
@@ -42,19 +42,11 @@ pub const f128_max = @bitCast(f128, @as(u128, 0x7FFEFFFFFFFFFFFFFFFFFFFFFFFFFFFF
pub const f128_epsilon = @bitCast(f128, @as(u128, 0x3F8F0000000000000000000000000000));
pub const f128_toint = 1.0 / f128_epsilon;
-pub const F80Repr = if (@import("builtin").cpu.arch.endian() == .Little) extern struct {
- fraction: u64 align(@alignOf(f80)),
- exp: u16,
-} else extern struct {
- exp: u16 align(@alignOf(f80)),
- fraction: u64,
-};
-
// float.h details
-pub const f80_true_min = @ptrCast(*const f80, &F80Repr{ .fraction = 1, .exp = 0 }).*;
-pub const f80_min = @ptrCast(*const f80, &F80Repr{ .fraction = 0x8000000000000000, .exp = 1 }).*;
-pub const f80_max = @ptrCast(*const f80, &F80Repr{ .fraction = 0xFFFFFFFFFFFFFFFF, .exp = 0x7FFE }).*;
-pub const f80_epsilon = @ptrCast(*const f80, &F80Repr{ .fraction = 0x8000000000000000, .exp = 0x3FC0 }).*;
+pub const f80_true_min = make_f80(.{ .fraction = 1, .exp = 0 });
+pub const f80_min = make_f80(.{ .fraction = 0x8000000000000000, .exp = 1 });
+pub const f80_max = make_f80(.{ .fraction = 0xFFFFFFFFFFFFFFFF, .exp = 0x7FFE });
+pub const f80_epsilon = make_f80(.{ .fraction = 0x8000000000000000, .exp = 0x3FC0 });
pub const f80_toint = 1.0 / f80_epsilon;
pub const f64_true_min = 4.94065645841246544177e-324;
@@ -104,9 +96,9 @@ pub const qnan_f64 = @bitCast(f64, qnan_u64);
pub const inf_u64 = @as(u64, 0x7FF << 52);
pub const inf_f64 = @bitCast(f64, inf_u64);
-pub const inf_f80 = @ptrCast(*const f80, &F80Repr{ .fraction = 0x8000000000000000, .exp = 0x7fff }).*;
-pub const nan_f80 = @ptrCast(*const f80, &F80Repr{ .fraction = 0xA000000000000000, .exp = 0x7fff }).*;
-pub const qnan_f80 = @ptrCast(*const f80, &F80Repr{ .fraction = 0xC000000000000000, .exp = 0x7fff }).*;
+pub const inf_f80 = make_f80(F80{ .fraction = 0x8000000000000000, .exp = 0x7fff });
+pub const nan_f80 = make_f80(F80{ .fraction = 0xA000000000000000, .exp = 0x7fff });
+pub const qnan_f80 = make_f80(F80{ .fraction = 0xC000000000000000, .exp = 0x7fff });
pub const nan_u128 = @as(u128, 0x7fff0000000000000000000000000001);
pub const nan_f128 = @bitCast(f128, nan_u128);
@@ -1501,3 +1493,21 @@ test "boolMask" {
pub fn comptimeMod(num: anytype, denom: comptime_int) IntFittingRange(0, denom - 1) {
return @intCast(IntFittingRange(0, denom - 1), @mod(num, denom));
}
+
+pub const F80 = struct {
+ fraction: u64,
+ exp: u16,
+};
+
+pub fn make_f80(repr: F80) f80 {
+ const int = (@as(u80, repr.exp) << 64) | repr.fraction;
+ return @bitCast(f80, int);
+}
+
+pub fn break_f80(x: f80) F80 {
+ const int = @bitCast(u80, x);
+ return .{
+ .fraction = @truncate(u64, int),
+ .exp = @truncate(u16, int >> 64),
+ };
+}
src/codegen/llvm.zig
@@ -824,23 +824,24 @@ pub const DeclGen = struct {
fn llvmType(dg: *DeclGen, t: Type) Allocator.Error!*const llvm.Type {
const gpa = dg.gpa;
+ const target = dg.module.getTarget();
switch (t.zigTypeTag()) {
.Void, .NoReturn => return dg.context.voidType(),
.Int => {
- const info = t.intInfo(dg.module.getTarget());
+ const info = t.intInfo(target);
return dg.context.intType(info.bits);
},
.Enum => {
var buffer: Type.Payload.Bits = undefined;
const int_ty = t.intTagType(&buffer);
- const bit_count = int_ty.intInfo(dg.module.getTarget()).bits;
+ const bit_count = int_ty.intInfo(target).bits;
return dg.context.intType(bit_count);
},
- .Float => switch (t.floatBits(dg.module.getTarget())) {
+ .Float => switch (t.floatBits(target)) {
16 => return dg.context.halfType(),
32 => return dg.context.floatType(),
64 => return dg.context.doubleType(),
- 80 => return dg.context.x86FP80Type(),
+ 80 => return if (backendSupportsF80(target)) dg.context.x86FP80Type() else dg.context.intType(80),
128 => return dg.context.fp128Type(),
else => unreachable,
},
@@ -859,7 +860,8 @@ pub const DeclGen = struct {
const llvm_addrspace = dg.llvmAddressSpace(t.ptrAddressSpace());
const elem_ty = t.childType();
const lower_elem_ty = switch (elem_ty.zigTypeTag()) {
- .Opaque, .Array, .Fn => true,
+ .Opaque, .Fn => true,
+ .Array => elem_ty.childType().hasRuntimeBits(),
else => elem_ty.hasRuntimeBits(),
};
const llvm_elem_ty = if (lower_elem_ty)
@@ -889,9 +891,11 @@ pub const DeclGen = struct {
else => unreachable,
},
.Array => {
- const elem_type = try dg.llvmType(t.childType());
+ const elem_ty = t.childType();
+ assert(elem_ty.onePossibleValue() == null);
+ const elem_llvm_ty = try dg.llvmType(elem_ty);
const total_len = t.arrayLen() + @boolToInt(t.sentinel() != null);
- return elem_type.arrayType(@intCast(c_uint, total_len));
+ return elem_llvm_ty.arrayType(@intCast(c_uint, total_len));
},
.Vector => {
const elem_type = try dg.llvmType(t.childType());
@@ -978,7 +982,6 @@ pub const DeclGen = struct {
if (struct_obj.layout == .Packed) {
try llvm_field_types.ensureUnusedCapacity(gpa, struct_obj.fields.count() * 2);
- const target = dg.module.getTarget();
comptime assert(Type.packed_struct_layout_version == 1);
var offset: u64 = 0;
var big_align: u32 = 0;
@@ -1073,7 +1076,6 @@ pub const DeclGen = struct {
gop.key_ptr.* = try t.copy(dg.object.type_map_arena.allocator());
const union_obj = t.cast(Type.Payload.Union).?.data;
- const target = dg.module.getTarget();
if (t.unionTagType()) |enum_tag_ty| {
const enum_tag_llvm_ty = try dg.llvmType(enum_tag_ty);
const layout = union_obj.getLayout(target, true);
@@ -1141,7 +1143,6 @@ pub const DeclGen = struct {
},
.Fn => {
const fn_info = t.fnInfo();
- const target = dg.module.getTarget();
const sret = firstParamSRet(fn_info, target);
const return_type = fn_info.return_type;
const raw_llvm_ret_ty = try dg.llvmType(return_type);
@@ -1257,16 +1258,21 @@ pub const DeclGen = struct {
},
.Float => {
const llvm_ty = try dg.llvmType(tv.ty);
- switch (tv.ty.floatBits(dg.module.getTarget())) {
+ const target = dg.module.getTarget();
+ switch (tv.ty.floatBits(target)) {
16, 32, 64 => return llvm_ty.constReal(tv.val.toFloat(f64)),
80 => {
const float = tv.val.toFloat(f80);
- const repr = @ptrCast(*const std.math.F80Repr, &float);
+ const repr = std.math.break_f80(float);
const llvm_i80 = dg.context.intType(80);
var x = llvm_i80.constInt(repr.exp, .False);
x = x.constShl(llvm_i80.constInt(64, .False));
x = x.constOr(llvm_i80.constInt(repr.fraction, .False));
- return x.constBitCast(llvm_ty);
+ if (backendSupportsF80(target)) {
+ return x.constBitCast(llvm_ty);
+ } else {
+ return x;
+ }
},
128 => {
var buf: [2]u64 = @bitCast([2]u64, tv.val.toFloat(f128));
@@ -5353,3 +5359,12 @@ fn isByRef(ty: Type) bool {
},
}
}
+
+/// This function returns true if we expect LLVM to lower x86_fp80 correctly
+/// and false if we expect LLVM to crash if it counters an x86_fp80 type.
+fn backendSupportsF80(target: std.Target) bool {
+ return switch (target.cpu.arch) {
+ .x86_64, .i386 => true,
+ else => false,
+ };
+}
src/stage1/codegen.cpp
@@ -8195,17 +8195,15 @@ static LLVMValueRef gen_const_val(CodeGen *g, ZigValue *const_val, const char *n
case 64:
return LLVMConstReal(get_llvm_type(g, type_entry), const_val->data.x_f64);
case 80: {
- uint64_t buf[2];
- memcpy(&buf, &const_val->data.x_f80, 16);
-#if ZIG_BYTE_ORDER == ZIG_BIG_ENDIAN
- uint64_t tmp = buf[0];
- buf[0] = buf[1];
- buf[1] = tmp;
-#endif
- LLVMValueRef as_i128 = LLVMConstIntOfArbitraryPrecision(LLVMInt128Type(), 2, buf);
- if (!target_has_f80(g->zig_target)) return as_i128;
- LLVMValueRef as_int = LLVMConstTrunc(as_i128, LLVMIntType(80));
- return LLVMConstBitCast(as_int, get_llvm_type(g, type_entry));
+ LLVMTypeRef llvm_i80 = LLVMIntType(80);
+ LLVMValueRef x = LLVMConstInt(llvm_i80, const_val->data.x_f80.signExp, false);
+ x = LLVMConstShl(x, LLVMConstInt(llvm_i80, 64, false));
+ x = LLVMConstOr(x, LLVMConstInt(llvm_i80, const_val->data.x_f80.signif, false));
+ if (target_has_f80(g->zig_target)) {
+ return LLVMConstBitCast(x, LLVMX86FP80Type());
+ } else {
+ return x;
+ }
}
case 128:
{
@@ -9429,32 +9427,36 @@ static void define_builtin_types(CodeGen *g) {
{
ZigType *entry = new_type_table_entry(ZigTypeIdFloat);
- unsigned u64_alignment = LLVMABIAlignmentOfType(g->target_data_ref, LLVMInt64Type());
-
- if (u64_alignment >= 8) {
- entry->size_in_bits = 128;
- entry->abi_size = 16;
- entry->abi_align = 16;
- } else if (u64_alignment >= 4) {
- entry->size_in_bits = 96;
- entry->abi_size = 12;
- entry->abi_align = 4;
- } else {
- entry->size_in_bits = 80;
- entry->abi_size = 10;
- entry->abi_align = 2;
- }
- if (target_has_f80(g->zig_target)) {
- entry->llvm_type = LLVMX86FP80Type();
- } else {
- // We use an int here instead of x86_fp80 because on targets such as arm,
- // LLVM will give "ERROR: Cannot select" for any instructions involving
- // the x86_fp80 type.
- entry->llvm_type = get_int_type(g, false, entry->size_in_bits)->llvm_type;
- }
+ entry->size_in_bits = 80;
+
buf_init_from_str(&entry->name, "f80");
entry->data.floating.bit_count = 80;
+ switch (g->zig_target->arch) {
+ case ZigLLVM_x86_64:
+ entry->llvm_type = LLVMX86FP80Type();
+ entry->abi_size = 16;
+ entry->abi_align = 16;
+ break;
+ case ZigLLVM_x86:
+ entry->llvm_type = LLVMX86FP80Type();
+ entry->abi_size = 12;
+ entry->abi_align = 4;
+ break;
+ default: {
+ // We use an int here instead of x86_fp80 because on targets such as arm,
+ // LLVM will give "ERROR: Cannot select" for any instructions involving
+ // the x86_fp80 type.
+ ZigType *u80_ty = get_int_type(g, false, 80);
+ assert(!target_has_f80(g->zig_target));
+ assert(u80_ty->size_in_bits == entry->size_in_bits);
+ entry->llvm_type = get_llvm_type(g, u80_ty);
+ entry->abi_size = u80_ty->abi_size;
+ entry->abi_align = u80_ty->abi_align;
+ break;
+ }
+ }
+
entry->llvm_di_type = ZigLLVMCreateDebugBasicType(g->dbuilder, buf_ptr(&entry->name),
entry->size_in_bits, ZigLLVMEncoding_DW_ATE_unsigned());
src/type.zig
@@ -1877,9 +1877,28 @@ pub const Type = extern union {
.f16 => return 2,
.f32 => return 4,
.f64 => return 8,
- .f80 => return 16,
.f128 => return 16,
- .c_longdouble => return 16,
+
+ .f80 => switch (target.cpu.arch) {
+ .i386 => return 4,
+ .x86_64 => return 16,
+ else => {
+ var payload: Payload.Bits = .{
+ .base = .{ .tag = .int_unsigned },
+ .data = 80,
+ };
+ const u80_ty = initPayload(&payload.base);
+ return abiAlignment(u80_ty, target);
+ },
+ },
+ .c_longdouble => switch (CType.longdouble.sizeInBits(target)) {
+ 16 => return abiAlignment(Type.f16, target),
+ 32 => return abiAlignment(Type.f32, target),
+ 64 => return abiAlignment(Type.f64, target),
+ 80 => return abiAlignment(Type.f80, target),
+ 128 => return abiAlignment(Type.f128, target),
+ else => unreachable,
+ },
.error_set,
.error_set_single,
@@ -2158,9 +2177,28 @@ pub const Type = extern union {
.f16 => return 2,
.f32 => return 4,
.f64 => return 8,
- .f80 => return 16,
.f128 => return 16,
- .c_longdouble => return 16,
+
+ .f80 => switch (target.cpu.arch) {
+ .i386 => return 12,
+ .x86_64 => return 16,
+ else => {
+ var payload: Payload.Bits = .{
+ .base = .{ .tag = .int_unsigned },
+ .data = 80,
+ };
+ const u80_ty = initPayload(&payload.base);
+ return abiSize(u80_ty, target);
+ },
+ },
+ .c_longdouble => switch (CType.longdouble.sizeInBits(target)) {
+ 16 => return abiSize(Type.f16, target),
+ 32 => return abiSize(Type.f32, target),
+ 64 => return abiSize(Type.f64, target),
+ 80 => return abiSize(Type.f80, target),
+ 128 => return abiSize(Type.f128, target),
+ else => unreachable,
+ },
.error_set,
.error_set_single,
@@ -2349,7 +2387,7 @@ pub const Type = extern union {
.c_ulong => return CType.ulong.sizeInBits(target),
.c_longlong => return CType.longlong.sizeInBits(target),
.c_ulonglong => return CType.ulonglong.sizeInBits(target),
- .c_longdouble => 128,
+ .c_longdouble => return CType.longdouble.sizeInBits(target),
.error_set,
.error_set_single,
@@ -4772,6 +4810,13 @@ pub const Type = extern union {
pub const @"u8" = initTag(.u8);
pub const @"u32" = initTag(.u32);
pub const @"u64" = initTag(.u64);
+
+ pub const @"f16" = initTag(.f16);
+ pub const @"f32" = initTag(.f32);
+ pub const @"f64" = initTag(.f64);
+ pub const @"f80" = initTag(.f80);
+ pub const @"f128" = initTag(.f128);
+
pub const @"bool" = initTag(.bool);
pub const @"usize" = initTag(.usize);
pub const @"isize" = initTag(.isize);
src/value.zig
@@ -1112,6 +1112,19 @@ pub const Value = extern union {
}
fn floatWriteToMemory(comptime F: type, f: F, target: Target, buffer: []u8) void {
+ if (F == f80) {
+ switch (target.cpu.arch) {
+ .i386, .x86_64 => {
+ const repr = std.math.break_f80(f);
+ std.mem.writeIntLittle(u64, buffer[0..8], repr.fraction);
+ std.mem.writeIntLittle(u16, buffer[8..10], repr.exp);
+ // TODO set the rest of the bytes to undefined. should we use 0xaa
+ // or is there a different way?
+ return;
+ },
+ else => {},
+ }
+ }
const Int = @Type(.{ .Int = .{
.signedness = .unsigned,
.bits = @typeInfo(F).Float.bits,
@@ -1122,41 +1135,43 @@ pub const Value = extern union {
fn floatReadFromMemory(comptime F: type, target: Target, buffer: []const u8) F {
if (F == f80) {
- switch (target.cpu.arch.endian()) {
- .Little => {
- const TargetF80Repr = extern struct {
- fraction: u64,
- exp: u16,
- };
- const target_repr = @ptrCast(*align(1) const TargetF80Repr, buffer.ptr);
- const real_repr: std.math.F80Repr = .{
- .fraction = target_repr.fraction,
- .exp = target_repr.exp,
- };
- return @ptrCast(*const f80, &real_repr).*;
- },
- .Big => {
- const TargetF80Repr = extern struct {
- exp: u16,
- fraction: u64,
- };
- const target_repr = @ptrCast(*align(1) const TargetF80Repr, buffer.ptr);
- const real_repr: std.math.F80Repr = .{
- .fraction = target_repr.fraction,
- .exp = target_repr.exp,
- };
- return @ptrCast(*const f80, &real_repr).*;
- },
+ switch (target.cpu.arch) {
+ .i386, .x86_64 => return std.math.make_f80(.{
+ .fraction = std.mem.readIntLittle(u64, buffer[0..8]),
+ .exp = std.mem.readIntLittle(u16, buffer[8..10]),
+ }),
+ else => {},
}
}
const Int = @Type(.{ .Int = .{
.signedness = .unsigned,
.bits = @typeInfo(F).Float.bits,
} });
- const int = std.mem.readInt(Int, buffer[0..@sizeOf(Int)], target.cpu.arch.endian());
+ const int = readInt(Int, buffer[0..@sizeOf(Int)], target.cpu.arch.endian());
return @bitCast(F, int);
}
+ fn readInt(comptime Int: type, buffer: *const [@sizeOf(Int)]u8, endian: std.builtin.Endian) Int {
+ var result: Int = 0;
+ switch (endian) {
+ .Big => {
+ for (buffer) |byte| {
+ result <<= 8;
+ result |= byte;
+ }
+ },
+ .Little => {
+ var i: usize = buffer.len;
+ while (i != 0) {
+ i -= 1;
+ result <<= 8;
+ result |= buffer[i];
+ }
+ },
+ }
+ return result;
+ }
+
/// Asserts that the value is a float or an integer.
pub fn toFloat(val: Value, comptime T: type) T {
return switch (val.tag()) {
test/behavior/floatop.zig
@@ -5,7 +5,10 @@ const math = std.math;
const pi = std.math.pi;
const e = std.math.e;
const Vector = std.meta.Vector;
-const has_f80_rt = @import("builtin").cpu.arch == .x86_64;
+const has_f80_rt = switch (builtin.cpu.arch) {
+ .x86_64, .i386 => true,
+ else => false,
+};
const epsilon_16 = 0.001;
const epsilon = 0.000001;