[Pixman] [PATCH 1/8] test: random data from file. Globals variables.

[bansan85]

---
 test/utils-prng.c |  4 ++++
 test/utils-prng.h | 23 +++++++++++++++++++++++
 2 files changed, 27 insertions(+)

diff --git a/test/utils-prng.c b/test/utils-prng.c
index c27b5be..1d62129 100644
--- a/test/utils-prng.c
+++ b/test/utils-prng.c
@@ -31,6 +31,10 @@
 #include <xmmintrin.h>
 #endif
 
+const uint8_t *random_data;
+size_t size_data;
+size_t running_data;
+
 void smallprng_srand_r (smallprng_t *x, uint32_t seed)
 {
     uint32_t i;
diff --git a/test/utils-prng.h b/test/utils-prng.h
index f9ae8dd..98022d8 100644
--- a/test/utils-prng.h
+++ b/test/utils-prng.h
@@ -79,6 +79,11 @@
 
 /*****************************************************************************/
 
+/* Used if random data from file. */
+extern const uint8_t *random_data;
+extern size_t size_data;
+extern size_t running_data;
+
 #ifdef HAVE_GCC_VECTOR_EXTENSIONS
 typedef uint32_t uint32x4 __attribute__ ((vector_size(16)));
 typedef uint8_t  uint8x16 __attribute__ ((vector_size(16)));
@@ -111,6 +116,24 @@ typedef union
 
 /*****************************************************************************/
 
+static force_inline uint8_t
+get_rand_data_8() {
+    uint8_t retour = random_data[running_data];
+    running_data = (running_data + 1) % size_data;
+    return retour;
+}
+
+static force_inline uint32_t
+get_rand_data_32() {
+    /* Do not use 4 get_rand_data_8 () in the same line
+     * to be sure of the execution order. */
+    uint8_t un = get_rand_data_8();
+    uint8_t deux = get_rand_data_8();
+    uint8_t trois = get_rand_data_8();
+    uint8_t quatre = get_rand_data_8();
+    return (un << 24) + (deux << 16) + (trois << 8) + (quatre);
+}
+
 static force_inline uint32_t
 smallprng_rand_r (smallprng_t *x)
 {
-- 
2.15.0