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fixed typo in mbicubic (thanks john)

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This commit is contained in:
Nicolas Robidoux 2010-02-15 21:37:38 +00:00
parent 81afcea40d
commit 8b0fd7dd9f
1 changed files with 25 additions and 21 deletions
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44
libvips/resample/mbicubic.cpp
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@ -146,10 +146,10 @@ typedef struct _VipsInterpolateMbicubicClass {
* uses different parameters and consequently is not a direct * uses different parameters and consequently is not a direct
* substitute. To be fixed in the future. * substitute. To be fixed in the future.
* *
* Note that the two variants differ in whether (a) or (b) follows the * Note that the two variants differ in whether (a) or (b) is the
* forward branch. If there is a difference in likelihood, put the * "out" of the forward branch of the second factor. If there is a
* likely one in (a) in the first variant, and the likely one in (b) * difference in likelihood, put the likely one in (a) in the first
* in the second. * variant, and the likely one in (b) in the second.
*/ */
#define MINMOD(a,b,a_times_a,a_times_b) \ #define MINMOD(a,b,a_times_a,a_times_b) \
( (a_times_b)>=0. ? 1. : 0. ) * ( (a_times_b)<(a_times_a) ? (b) : (a) ) ( (a_times_b)>=0. ? 1. : 0. ) * ( (a_times_b)<(a_times_a) ? (b) : (a) )
@ -415,7 +415,7 @@ symmetrized_monotone_cubic_splines( const double coef_rite_point,
+ +
half_coef_rite_slope half_coef_rite_slope
* *
MINMOD( twice_l_thr, twice_s_thr, l_l_thr, l_l_thr ) MINMOD( twice_l_thr, twice_s_thr, l_l_thr, l_s_thr )
) * .5; ) * .5;
return newval; return newval;
@ -441,25 +441,29 @@ symmetrized_monotone_cubic_splines( const double coef_rite_point,
\ \
const T* restrict in = (T *) pin; \ const T* restrict in = (T *) pin; \
\ \
const int uno_one_shift = -lskip - bands; \ const int one_shift = -bands; \
const int thr_shift = bands; \
const int fou_shift = 2*bands; \
\
const int uno_two_shift = -lskip; \ const int uno_two_shift = -lskip; \
const int uno_thr_shift = -lskip + bands; \
const int uno_fou_shift = -lskip + 2*bands; \
\
const int dos_one_shift = - bands; \
const int dos_two_shift = 0; \ const int dos_two_shift = 0; \
const int dos_thr_shift = bands; \
const int dos_fou_shift = 2*bands; \
\
const int tre_one_shift = lskip - bands; \
const int tre_two_shift = lskip; \ const int tre_two_shift = lskip; \
const int tre_thr_shift = lskip + bands; \
const int tre_fou_shift = lskip + 2*bands; \
\
const int qua_one_shift = 2*lskip - bands; \
const int qua_two_shift = 2*lskip; \ const int qua_two_shift = 2*lskip; \
const int qua_thr_shift = 2*lskip + bands; \ \
const int qua_fou_shift = 2*lskip + 2*bands; \ const int uno_one_shift = uno_two_shift + one_shift; \
const int dos_one_shift = dos_two_shift + one_shift; \
const int tre_one_shift = tre_two_shift + one_shift; \
const int qua_one_shift = qua_two_shift + one_shift; \
\
const int uno_thr_shift = uno_two_shift + thr_shift; \
const int dos_thr_shift = dos_two_shift + thr_shift; \
const int tre_thr_shift = tre_two_shift + thr_shift; \
const int qua_thr_shift = qua_two_shift + thr_shift; \
\
const int uno_fou_shift = uno_two_shift + fou_shift; \
const int dos_fou_shift = dos_two_shift + fou_shift; \
const int tre_fou_shift = tre_two_shift + fou_shift; \
const int qua_fou_shift = qua_two_shift + fou_shift; \
\ \
const double x_squared = x * x; \ const double x_squared = x * x; \
const double y_squared = y * y; \ const double y_squared = y * y; \