Remove rand_r from cpfloat_binary32|64.h

Author: mfasi

src/cpfloat_binary32.h

@@ -312,7 +312,7 @@ static inline int cpf_fmaf(float *X, const float *A, const float *B,
 #define MAXRAND 0x7FFFFFFFU
 #ifdef _OPENMP
 #define INITRAND(seed) *seed = time(NULL);
-#define GEN_SINGLE_RAND(seed) ((INTTYPE)rand_r((unsigned int *)seed))
+#define GEN_SINGLE_RAND(seed) ((INTTYPE)thread_safe_rand((unsigned int *)seed))
 #else /*# ifdef _OPENMP */
 #define INITRAND(seed) srand(time(NULL));
 #define GEN_SINGLE_RAND(seed) ((INTTYPE)rand())

src/cpfloat_binary64.h

@@ -312,11 +312,12 @@ static inline int cpf_fma(double *X, const double *A, const double *B,
 #ifdef _OPENMP
 #define INITRAND(seed) *seed = time(NULL);
 #define GEN_SINGLE_RAND(seed)                                                  \
-  ((INTTYPE)rand_r((unsigned int *)seed) +                                     \
-   ((INTTYPE)rand_r((unsigned int *)seed) << 31))
+  ((INTTYPE)thread_safe_rand((unsigned int *)seed) +                                     \
+   ((INTTYPE)thread_safe_rand((unsigned int *)seed) << 31))
 #else /*# ifdef _OPENMP */
 #define INITRAND(seed) srand(time(NULL));
-#define GEN_SINGLE_RAND(seed) ((INTTYPE)rand() + ((INTTYPE)rand() << 31))
+#define GEN_SINGLE_RAND(seed) ((INTTYPE)thread_safe_rand((unsigned int *)seed) + \
+  ((INTTYPE)thread_safe_rand((unsigned int *)seed  ) << 31))
 #endif  /*# ifdef _OPENMP */
 #endif /* #ifdef PCG_VARIANTS_H_INCLUDED */