diff options
| -rw-r--r-- | sqrt_ui.c | 39 |
1 files changed, 20 insertions, 19 deletions
@@ -1,6 +1,6 @@ /* mpfr_sqrt_ui -- square root of a machine integer -Copyright (C) 2000 Free Software Foundation. +Copyright (C) 2000-2001 Free Software Foundation. This file is part of the MPFR Library. @@ -37,22 +37,23 @@ mpfr_sqrt_ui (r, u, rnd_mode) mp_rnd_t rnd_mode; #endif { - int error = 0; - mpfr_t uu; - mp_limb_t up[1]; - unsigned long cnt; - - if (u) { /* if u=0, do nothing */ - MPFR_INIT1(up, uu, BITS_PER_MP_LIMB, 1); - count_leading_zeros(cnt, (mp_limb_t) u); - *up = (mp_limb_t) u << cnt; - MPFR_EXP(uu) = BITS_PER_MP_LIMB-cnt; - - error = mpfr_sqrt(r, uu, rnd_mode); - } - else { - MPFR_CLEAR_FLAGS(r); - MPFR_SET_ZERO(r); - } - return error; + if (u) + { + mpfr_t uu; + mp_limb_t up[1]; + unsigned long cnt; + + MPFR_INIT1(up, uu, BITS_PER_MP_LIMB, 1); + count_leading_zeros (cnt, (mp_limb_t) u); + *up = (mp_limb_t) u << cnt; + MPFR_EXP(uu) = BITS_PER_MP_LIMB - cnt; + + return mpfr_sqrt(r, uu, rnd_mode); + } + else /* sqrt(0) = 0 */ + { + MPFR_CLEAR_FLAGS(r); + MPFR_SET_ZERO(r); + return 0; + } } |