Merge branch 'master' of https://github.com/HaraldHofstaetter/Quadmath.jl

Author: HaraldHofstaetter

README.md

@@ -20,7 +20,7 @@ Then 'Quadmath_examples' will be listed in the JuliaBox home screen. The example
 +  `ccall` does not treat parameters and returning values of Julia type `Float128` as C type `__float128` as it would
     be appropriate. 
 
-    Unfortunately, this is a bug which cannot easily be fixed. 
+    Unfortunately, this is a bug which cannot easily be fixed without modifying the internals of Julia. 
     The [x86-64 Application Binary Interface](http://www.x86-64.org/documentation.html) 
     says that parameters and returning values of type `__float128` should be passed preferably in the (128 bit long) SSE       floating point registers `xmm0`,...,`xmm7`. However, for the datatype `Float128` defined as
     ```julia
@@ -36,8 +36,9 @@ Then 'Quadmath_examples' will be listed in the JuliaBox home screen. The example
     ``` 
     in C.
 
-    A remedy is to implement a wrapper function for each external function with `__float128` parameters or return values,
-    that you want to call by `ccall`. Such a wrapper takes parameters `x` of type `myfloat128` declared as
+    As a remedy, you can implement a wrapper function for each external function with `__float128` parameters 
+    or return values, that you want to call with `ccall`. Such a wrapper takes parameters `x` of type 
+    `myfloat128` declared as
     ```c
     typedef union
     {
@@ -49,7 +50,7 @@ Then 'Quadmath_examples' will be listed in the JuliaBox home screen. The example
       } words64;
     } myfloat128;
     ```
-    and calls the original function with `x.value` as actual parameter for the coorresponding formal parameter of type
+    and calls the original function with `x.value` as actual parameter for the corresponding formal parameter of type
     `__float128`. 
     This is exactly the technique we use in 
     [quadmath_wrapper.c](https://github.com/HaraldHofstaetter/Quadmath.jl/blob/master/deps/src/quadmath_wrapper.c)