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Diffstat (limited to '')
-rw-r--r-- | libc-top-half/musl/src/prng/__rand48_step.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/libc-top-half/musl/src/prng/__rand48_step.c b/libc-top-half/musl/src/prng/__rand48_step.c new file mode 100644 index 0000000..94703d0 --- /dev/null +++ b/libc-top-half/musl/src/prng/__rand48_step.c @@ -0,0 +1,14 @@ +#include <stdint.h> +#include "rand48.h" + +uint64_t __rand48_step(unsigned short *xi, unsigned short *lc) +{ + uint64_t a, x; + x = xi[0] | xi[1]+0U<<16 | xi[2]+0ULL<<32; + a = lc[0] | lc[1]+0U<<16 | lc[2]+0ULL<<32; + x = a*x + lc[3]; + xi[0] = x; + xi[1] = x>>16; + xi[2] = x>>32; + return x & 0xffffffffffffull; +} |