diff options
Diffstat (limited to 'cmp_abs.c')
| -rw-r--r-- | cmp_abs.c | 21 |
1 files changed, 13 insertions, 8 deletions
@@ -24,8 +24,8 @@ MA 02111-1307, USA. */ #include "mpfr.h" #include "mpfr-impl.h" -/* returns sign(abs(b) - abs(c)) - b and c must be real numbers */ +/* Return a positive value if abs(b) > abs(c), 0 if abs(b) = abs(c), and + a negative value if abs(b) < abs(c). Neither b nor c may be NaN. */ int mpfr_cmpabs (mpfr_srcptr b, mpfr_srcptr c) @@ -34,13 +34,18 @@ mpfr_cmpabs (mpfr_srcptr b, mpfr_srcptr c) mp_size_t bn, cn; mp_limb_t *bp, *cp; - MPFR_ASSERTN(MPFR_IS_FP(b)); - MPFR_ASSERTN(MPFR_IS_FP(c)); + MPFR_ASSERTN (! MPFR_IS_NAN (b)); + MPFR_ASSERTN (! MPFR_IS_NAN (c)); - if (MPFR_IS_ZERO(b)) - return MPFR_IS_ZERO(c) ? 0 : -1; - if (MPFR_IS_ZERO(c)) - return 1; + if (MPFR_IS_INF (b)) + return ! MPFR_IS_INF (c); + if (MPFR_IS_INF (c)) + return -1; + + if (MPFR_IS_ZERO (c)) + return ! MPFR_IS_ZERO (b); + if (MPFR_IS_ZERO (b)) + return -1; be = MPFR_GET_EXP (b); ce = MPFR_GET_EXP (c); |