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Add <stdbool.h> to examples where needed, pluse minor stylistic touch-up.

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Guillaume Chatelet 2018-02-13 14:19:25 +01:00
parent f7e0a6d066
commit 36df25b7bc
1 changed files with 7 additions and 4 deletions
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11
README.md
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@ -40,7 +40,7 @@ AES and the SSE4.2 instruction sets:
static const X86Features features = GetX86Info().features;
void Compute(void) {
if(features.aes && features.sse4_2) {
if (features.aes && features.sse4_2) {
// Run optimized code.
} else {
// Run standard code.
@ -55,6 +55,7 @@ then query for the specific features you care about. Below, we store all the ARM
features and then check whether AES and NEON are supported.
```c
#include <stdbool.h>
#include "cpuinfo_arm.h"
static const ArmFeatures features = GetArmInfo().features;
@ -73,6 +74,7 @@ The following code determines whether the compiler was told to use the AVX
instruction set (e.g., `g++ -mavx`) and sets `has_avx` accordingly.
```c
#include <stdbool.h>
#include "cpuinfo_x86.h"
static const X86Features features = GetX86Info().features;
@ -87,13 +89,14 @@ use AVX and 0 otherwise, combining compile time and runtime knowledge.
### Rejecting poor hardware implementations based on microarchitecture
On x86, the first incarnation of a feature in a microarchitecture might not be
the most efficient (e.g., AVX on Sandy Bridge). We provide a function to
retrieve the underlying microarchitecture so you can decide whether to use it.
the most efficient (e.g. AVX on Sandy Bridge). We provide a function to retrieve
the underlying microarchitecture so you can decide whether to use it.
Below, `has_fast_avx` is set to 1 if the CPU supports the AVX instruction
set&mdash;but only if it's not Sandy Bridge.
```c
#include <stdbool.h>
#include "cpuinfo_x86.h"
static const X86Info info = GetX86Info();
@ -154,4 +157,4 @@ See [LICENSE](LICENSE) for more information.
<a name="cmake"></a>
## Build with CMake
Please check the [CMake build instructions](cmake/README.md)
Please check the [CMake build instructions](cmake/README.md).