dawn-cmake/src/writer/float_to_string.h
Ben Clayton 2da833d815 writer: Simplify floats when printed
Add `tint::writer::FloatToString()`:

Converts the float `f` to a string using fixed-point notation (not scientific).
The float will be printed with the full precision required to describe the float.
All trailing `0`s will be omitted after the last non-zero fractional number,
unless the fractional is zero, in which case the number will end with `.0`.

Use this for the wgsl, msl and hlsl backends.

Change-Id: If5701136579e4398c31c673942f30e8877e9f813
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/33421
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: David Neto <dneto@google.com>
2020-11-20 10:04:44 +00:00

35 lines
1.2 KiB
C++

// Copyright 2020 The Tint Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef SRC_WRITER_FLOAT_TO_STRING_H_
#define SRC_WRITER_FLOAT_TO_STRING_H_
#include <string>
namespace tint {
namespace writer {
/// Converts the float `f` to a string using fixed-point notation (not
/// scientific). The float will be printed with the full precision required to
/// describe the float. All trailing `0`s will be omitted after the last
/// non-zero fractional number, unless the fractional is zero, in which case the
/// number will end with `.0`.
/// @return the float f formatted to a string
std::string FloatToString(float f);
} // namespace writer
} // namespace tint
#endif // SRC_WRITER_FLOAT_TO_STRING_H_