diff options
Diffstat (limited to 'extern/curve_fit_nd/intern/curve_fit_inline.h')
| -rw-r--r-- | extern/curve_fit_nd/intern/curve_fit_inline.h | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/extern/curve_fit_nd/intern/curve_fit_inline.h b/extern/curve_fit_nd/intern/curve_fit_inline.h index 085148cc119..4df566ab4a5 100644 --- a/extern/curve_fit_nd/intern/curve_fit_inline.h +++ b/extern/curve_fit_nd/intern/curve_fit_inline.h @@ -219,13 +219,28 @@ MINLINE double len_vnvn( return sqrt(len_squared_vnvn(v0, v1, dims)); } -#if 0 -static double len_vn( +MINLINE double len_vn( const double v0[], const uint dims) { return sqrt(len_squared_vn(v0, dims)); } -#endif + +/* special case, save us negating a copy, then getting the length */ +MINLINE double len_squared_negated_vnvn( + const double v0[], const double v1[], const uint dims) +{ + double d = 0.0; + for (uint j = 0; j < dims; j++) { + d += sq(v0[j] + v1[j]); + } + return d; +} + +MINLINE double len_negated_vnvn( + const double v0[], const double v1[], const uint dims) +{ + return sqrt(len_squared_negated_vnvn(v0, v1, dims)); +} MINLINE double normalize_vn( double v0[], const uint dims) |