added fma and muladd

README.md

@@ -65,6 +65,8 @@ Currently, the `@compat` macro supports the following syntaxes:
 
 * `keytype` and `valtype`, which return key and value type of Associative type, can be used in julia 0.3.
 
+* `fma(x,y,z)` and `muladd(x,y,z)` can be used in Julia 0.3 for `x*y+z`.
+
 ## Renamed functions
 
 * `itrunc`, `iround`, `iceil`, `ifloor` are now accessed via `trunc(T, x)`, etc. [#9133](https://github.com/JuliaLang/julia/pull/9133)

src/Compat.jl

@@ -390,4 +390,14 @@ if VERSION < v"0.4.0-dev+4603"
     export Cstring, Cwstring
 end
 
+if VERSION < v"0.4.0-dev+2823"
+    fma(x::Number,y::Number,z::Number) = x*y + z
+    export fma
+end
+
+if VERSION < v"0.4.0-dev+2861"
+    muladd(x::Number,y::Number,z::Number) = x*y + z
+    export muladd
+end
+
 end # module

test/runtests.jl

@@ -295,3 +295,6 @@ let s = "foo", w = wstring("foo")
     @test reinterpret(Ptr{Cchar}, Compat.unsafe_convert(Cstring, s)) == pointer(s)
     @test reinterpret(Ptr{Cwchar_t}, Compat.unsafe_convert(Cwstring, w)) == pointer(w)
 end
+
+# fma and muladd
+@test fma(3,4,5) == 3*4+5 == muladd(3,4,5)