diff options
Diffstat (limited to 'src/libbiguint/bu_divmod.c')
-rw-r--r-- | src/libbiguint/bu_divmod.c | 31 |
1 files changed, 0 insertions, 31 deletions
diff --git a/src/libbiguint/bu_divmod.c b/src/libbiguint/bu_divmod.c deleted file mode 100644 index 17b6b7b..0000000 --- a/src/libbiguint/bu_divmod.c +++ /dev/null @@ -1,31 +0,0 @@ -/* ISC license. */ - -#include <errno.h> -#include <skalibs/biguint.h> - -/* - q = y/x mod m. -*/ - -int bu_divmod (uint32_t *q, unsigned int qn, uint32_t const *y, unsigned int yn, uint32_t const *x, unsigned int xn, uint32_t const *m, unsigned int mn) -{ - unsigned int ylen = bu_len(y, yn) ; - unsigned int xlen = bu_len(x, xn) ; - unsigned int mlen = bu_len(m, mn) ; - unsigned int n = ylen ; - if (n < xlen) n = xlen ; - if (n < mlen) n = mlen ; - if (!n) return (errno = EDOM, 0) ; - { - uint32_t yy[n] ; - uint32_t xx[n] ; - uint32_t mm[n] ; - bu_gcd(xx, n, x, xlen, m, mlen) ; - if ((xx[0] != 1) || (bu_len(xx, n) != 1)) return (errno = EDOM, 0) ; - bu_copy_internal(yy, y, ylen) ; bu_zero(yy+ylen, n-ylen) ; - bu_copy_internal(xx, x, xlen) ; bu_zero(xx+xlen, n-xlen) ; - bu_copy_internal(mm, m, mlen) ; bu_zero(mm+mlen, n-mlen) ; - bu_divmod_internal(yy, xx, mm, n) ; - return bu_copy(q, qn, yy, n) ; - } -} |