diff options
Diffstat (limited to 'runtime/kvx/i64_udivmod.c')
| -rw-r--r-- | runtime/kvx/i64_udivmod.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/runtime/kvx/i64_udivmod.c b/runtime/kvx/i64_udivmod.c new file mode 100644 index 00000000..952e47e5 --- /dev/null +++ b/runtime/kvx/i64_udivmod.c @@ -0,0 +1,30 @@ +#if 0 +/* THIS IS THE PREVIOUS VERSION, USED ON BOSTAN AND ANDEY */ +unsigned long long +udivmoddi4(unsigned long long num, unsigned long long den, int modwanted) +{ + unsigned long long r = num, q = 0; + + if(den <= r) { + unsigned k = __builtin_clzll (den) - __builtin_clzll (r); + den = den << k; + if(r >= den) { + r = r - den; + q = 1LL << k; + } + if(k != 0) { + unsigned i = k; + den = den >> 1; + do { + r = __builtin_kvx_stsud (den, r); + i--; + } while (i!= 0); + q = q + r; + r = r >> k; + q = q - (r << k); + } + } + + return modwanted ? r : q; +} +#endif |