| // Copyright 2014 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| // Package f32 implements some linear algebra and GL helpers for float32s. |
| // |
| // Types defined in this package have methods implementing common |
| // mathematical operations. The common form for these functions is |
| // |
| // func (dst *T) Op(lhs, rhs *T) |
| // |
| // which reads in traditional mathematical notation as |
| // |
| // dst = lhs op rhs. |
| // |
| // It is safe to use the destination address as the left-hand side, |
| // that is, dst *= rhs is dst.Mul(dst, rhs). |
| // |
| // WARNING |
| // |
| // The interface to this package is not stable. It will change considerably. |
| // Only use functions that provide package documentation. Semantics are |
| // non-obvious. Be prepared for the package name to change. |
| package f32 |
| |
| import "math" |
| |
| type Radian float32 |
| |
| func Cos(x float32) float32 { |
| return float32(math.Cos(float64(x))) |
| } |
| |
| func Sin(x float32) float32 { |
| return float32(math.Sin(float64(x))) |
| } |
| |
| func Sqrt(x float32) float32 { |
| return float32(math.Sqrt(float64(x))) // TODO(crawshaw): implement |
| } |
| |
| func Tan(x float32) float32 { |
| return float32(math.Tan(float64(x))) // TODO(crawshaw): fast version |
| } |
