common up round operations
This commit is contained in:
John Cupitt
parent
86dd11880d
commit
4ee4fe13a9
@ -10,8 +10,6 @@ libarithmetic_la_SOURCES = \
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im_cross_phase.c \
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im_cross_phase.c \
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im_deviate.c \
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im_deviate.c \
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im_divide.c \
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im_divide.c \
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im_ceil.c \
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im_floor.c \
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im_expntra.c \
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im_expntra.c \
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im_invert.c \
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im_invert.c \
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im_linreg.c \
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im_linreg.c \
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@ -24,7 +22,7 @@ libarithmetic_la_SOURCES = \
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im_multiply.c \
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im_multiply.c \
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im_powtra.c \
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im_powtra.c \
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im_remainder.c \
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im_remainder.c \
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im_rint.c \
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round.c \
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im_sign.c \
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im_sign.c \
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math.c \
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math.c \
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im_stats.c \
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im_stats.c \
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@ -1,125 +0,0 @@
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/* im_ceil.c
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*
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* 20/6/02 JC
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* - adapted from im_abs()
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* 29/8/09
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* - gtkdoc
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* - tiny cleanups
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*/
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/*
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This file is part of VIPS.
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VIPS is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/*
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These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif /*HAVE_CONFIG_H*/
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#include <vips/intl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <math.h>
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#include <vips/vips.h>
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#ifdef WITH_DMALLOC
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#include <dmalloc.h>
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#endif /*WITH_DMALLOC*/
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#define LOOP( TYPE ) { \
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TYPE *p = (TYPE *) in; \
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TYPE *q = (TYPE *) out; \
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\
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for( x = 0; x < sz; x++ ) \
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q[x] = ceil( p[x] ); \
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}
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/* Ceil a buffer of PELs.
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*/
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static void
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ceil_gen( PEL *in, PEL *out, int width, IMAGE *im )
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{
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/* Complex just doubles the size.
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*/
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const int sz = width * im->Bands * (im_iscomplex( im ) ? 2 : 1);
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int x;
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switch( im->BandFmt ) {
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case IM_BANDFMT_COMPLEX:
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case IM_BANDFMT_FLOAT:
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LOOP( float );
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break;
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case IM_BANDFMT_DOUBLE:
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case IM_BANDFMT_DPCOMPLEX:
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LOOP( double );
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break;
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default:
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g_assert( 0 );
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}
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}
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/**
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* im_ceil:
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* @in: input #IMAGE
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* @out: output #IMAGE
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*
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* For each pixel, find the smallest integral value not less than.
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* Copy for integer types, call <function>ceil(3)</function> for float and
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* complex types.
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* Output type == input type.
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*
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* See also: im_floor(), im_rint(), im_clip2fmt()
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*
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* Returns: 0 on success, -1 on error
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*/
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int
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im_ceil( IMAGE *in, IMAGE *out )
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{
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if( im_piocheck( in, out ) ||
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im_check_uncoded( "im_ceil", in ) )
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return( -1 );
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/* Is this one of the int types? Degenerate to im_copy() if it
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* is.
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*/
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if( im_isint( in ) )
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return( im_copy( in, out ) );
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/* Output type == input type.
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*/
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if( im_cp_desc( out, in ) )
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return( -1 );
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/* Generate!
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*/
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if( im_wrapone( in, out,
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(im_wrapone_fn) ceil_gen, in, NULL ) )
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return( -1 );
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return( 0 );
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}
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@ -1,177 +0,0 @@
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/* im_costra
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*
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* Copyright: 1990, N. Dessipris, based on im_powtra()
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* Author: Nicos Dessipris
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* Written on: 02/05/1990
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* Modified on:
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* 5/5/93 JC
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* - adapted from im_lintra to work with partial images
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* - incorrect implementation of complex logs removed
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* 1/7/93 JC
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* - adapted for partial v2
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* - ANSIfied
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* 24/2/95 JC
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* - im_logtra() adapted to make im_costra()
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* - adapted for im_wrapone()
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* 26/1/96 JC
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* - im_acostra() added
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* 30/8/09
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* - gtkdoc
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* - tiny cleanups
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* - make im__math(), share with other math-style functions
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*/
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/*
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This file is part of VIPS.
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VIPS is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/*
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These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif /*HAVE_CONFIG_H*/
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#include <vips/intl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <math.h>
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#include <vips/vips.h>
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#ifdef WITH_DMALLOC
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#include <dmalloc.h>
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#endif /*WITH_DMALLOC*/
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/* Define what we do for each band element type. Non-complex input, any
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* output.
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*/
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#define COS( IN, OUT ) { \
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IN *p = (IN *) in; \
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OUT *q = (OUT *) out; \
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\
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for( x = 0; x < sz; x++ ) \
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q[x] = cos( IM_RAD( (double) p[x] ) ); \
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}
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/* cos a buffer of PELs.
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*/
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static void
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costra_gen( PEL *in, PEL *out, int width, IMAGE *im )
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{
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const int sz = width * im->Bands;
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int x;
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/* Switch for all input types.
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*/
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switch( im->BandFmt ) {
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case IM_BANDFMT_UCHAR: COS( unsigned char, float ); break;
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case IM_BANDFMT_CHAR: COS( signed char, float ); break;
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case IM_BANDFMT_USHORT: COS( unsigned short, float ); break;
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case IM_BANDFMT_SHORT: COS( signed short, float ); break;
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case IM_BANDFMT_UINT: COS( unsigned int, float ); break;
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case IM_BANDFMT_INT: COS( signed int, float ); break;
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case IM_BANDFMT_FLOAT: COS( float, float ); break;
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case IM_BANDFMT_DOUBLE: COS( double, double ); break;
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default:
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g_assert( 0 );
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}
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}
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/**
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* im_costra
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* @in: input #IMAGE
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* @out: output #IMAGE
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*
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* For each pixel, call <function>cos(3)</function> (cosine). Angles are
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* expressed in degrees. The output type is float, unless the input is
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* double, in which case the output is double. Non-complex images only.
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*
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* See also: im_acostra(), im_sintra(), im_tantra().
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*
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* Returns: 0 on success, -1 on error
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*/
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int
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im_costra( IMAGE *in, IMAGE *out )
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{
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return( im__math( "im_costra", in, out, (im_wrapone_fn) costra_gen ) );
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}
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/* And acos().
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*/
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#define ACOS( IN, OUT ) { \
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IN *p = (IN *) in; \
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OUT *q = (OUT *) out; \
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\
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for( x = 0; x < sz; x++ ) \
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q[x] = IM_DEG( acos( (double) p[x] ) ); \
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}
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/* acos a buffer of PELs.
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*/
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static void
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acostra_gen( PEL *in, PEL *out, int width, IMAGE *im )
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{
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const int sz = width * im->Bands;
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int x;
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/* Switch for all input types.
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*/
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switch( im->BandFmt ) {
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case IM_BANDFMT_UCHAR: ACOS( unsigned char, float ); break;
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case IM_BANDFMT_CHAR: ACOS( signed char, float ); break;
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case IM_BANDFMT_USHORT: ACOS( unsigned short, float ); break;
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case IM_BANDFMT_SHORT: ACOS( signed short, float ); break;
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case IM_BANDFMT_UINT: ACOS( unsigned int, float ); break;
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case IM_BANDFMT_INT: ACOS( signed int, float ); break;
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case IM_BANDFMT_FLOAT: ACOS( float, float ); break;
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case IM_BANDFMT_DOUBLE: ACOS( double, double ); break;
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default:
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g_assert( 0 );
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}
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}
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/**
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* im_acostra
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* @in: input #IMAGE
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* @out: output #IMAGE
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*
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* For each pixel, call <function>acos(3)</function> (arc or inverse cosine).
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* Angles are expressed in
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* degrees. The output type is float, unless the input is double, in which
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* case the output is double. Non-complex images only.
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*
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* See also: im_costra(), im_asintra(), im_atantra().
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*
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* Returns: 0 on success, -1 on error
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*/
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int
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im_acostra( IMAGE *in, IMAGE *out )
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{
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return( im__math( "im_acostra", in, out,
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(im_wrapone_fn) acostra_gen ) );
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}
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@ -1,136 +0,0 @@
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/* im_floor.c
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*
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* 20/6/02 JC
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* - adapted from im_abs()
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* 8/12/06
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* - add liboil support
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* 2/9/09
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* - gtkdoc
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* - tiny cleanups
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*/
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/*
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||||||
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|
||||||
This file is part of VIPS.
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|
||||||
|
|
||||||
VIPS is free software; you can redistribute it and/or modify
|
|
||||||
it under the terms of the GNU Lesser General Public License as published by
|
|
||||||
the Free Software Foundation; either version 2 of the License, or
|
|
||||||
(at your option) any later version.
|
|
||||||
|
|
||||||
This program is distributed in the hope that it will be useful,
|
|
||||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
||||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
||||||
GNU Lesser General Public License for more details.
|
|
||||||
|
|
||||||
You should have received a copy of the GNU Lesser General Public License
|
|
||||||
along with this program; if not, write to the Free Software
|
|
||||||
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
||||||
|
|
||||||
*/
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|
||||||
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/*
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||||||
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||||||
These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
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||||||
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif /*HAVE_CONFIG_H*/
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#include <vips/intl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <math.h>
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#include <vips/vips.h>
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#include <vips/internal.h>
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#ifdef HAVE_LIBOIL
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#include <liboil/liboil.h>
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#endif /*HAVE_LIBOIL*/
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#ifdef WITH_DMALLOC
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#include <dmalloc.h>
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#endif /*WITH_DMALLOC*/
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#define FLOOR( TYPE ) { \
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TYPE *p = (TYPE *) in; \
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TYPE *q = (TYPE *) out; \
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\
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for( x = 0; x < sz; x++ ) \
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q[x] = floor( p[x] ); \
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}
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/* Ceil a buffer of PELs.
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*/
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static void
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floor_gen( PEL *in, PEL *out, int width, IMAGE *im )
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{
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/* Complex just doubles the size.
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*/
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const int sz = width * im->Bands * (im_iscomplex( im ) ? 2 : 1);
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int x;
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switch( im->BandFmt ) {
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case IM_BANDFMT_COMPLEX:
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case IM_BANDFMT_FLOAT:
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#ifdef HAVE_LIBOIL
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oil_floor_f32( (float *) out, (float *) in, sz );
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#else /*!HAVE_LIBOIL*/
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FLOOR( float );
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||||||
#endif /*HAVE_LIBOIL*/
|
|
||||||
break;
|
|
||||||
|
|
||||||
case IM_BANDFMT_DOUBLE:
|
|
||||||
case IM_BANDFMT_DPCOMPLEX:
|
|
||||||
FLOOR( double );
|
|
||||||
break;
|
|
||||||
|
|
||||||
default:
|
|
||||||
g_assert( 0 );
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* im_floor:
|
|
||||||
* @in: input #IMAGE
|
|
||||||
* @out: output #IMAGE
|
|
||||||
*
|
|
||||||
* For each pixel, find the largest integral value not less than.
|
|
||||||
* Copy for integer types, call <function>floor()</function> for float and
|
|
||||||
* complex types.
|
|
||||||
* Output type == input type.
|
|
||||||
*
|
|
||||||
* See also: im_ceil(), im_rint(), im_clip2fmt()
|
|
||||||
*
|
|
||||||
* Returns: 0 on success, -1 on error
|
|
||||||
*/
|
|
||||||
int
|
|
||||||
im_floor( IMAGE *in, IMAGE *out )
|
|
||||||
{
|
|
||||||
if( im_piocheck( in, out ) ||
|
|
||||||
im_check_uncoded( "im_floor", in ) )
|
|
||||||
return( -1 );
|
|
||||||
|
|
||||||
/* Is this one of the int types? Degenerate to im_copy() if it
|
|
||||||
* is.
|
|
||||||
*/
|
|
||||||
if( im_isint( in ) )
|
|
||||||
return( im_copy( in, out ) );
|
|
||||||
|
|
||||||
/* Output type == input type.
|
|
||||||
*/
|
|
||||||
if( im_cp_desc( out, in ) )
|
|
||||||
return( -1 );
|
|
||||||
|
|
||||||
/* Generate!
|
|
||||||
*/
|
|
||||||
if( im_wrapone( in, out,
|
|
||||||
(im_wrapone_fn) floor_gen, in, NULL ) )
|
|
||||||
return( -1 );
|
|
||||||
|
|
||||||
return( 0 );
|
|
||||||
}
|
|
||||||
@ -1,127 +0,0 @@
|
|||||||
/* im_rint.c
|
|
||||||
*
|
|
||||||
* 20/6/02 JC
|
|
||||||
* - adapted from im_floor()
|
|
||||||
* 9/9/09
|
|
||||||
* - updated from new im_floor()
|
|
||||||
*/
|
|
||||||
|
|
||||||
/*
|
|
||||||
|
|
||||||
This file is part of VIPS.
|
|
||||||
|
|
||||||
VIPS is free software; you can redistribute it and/or modify
|
|
||||||
it under the terms of the GNU Lesser General Public License as published by
|
|
||||||
the Free Software Foundation; either version 2 of the License, or
|
|
||||||
(at your option) any later version.
|
|
||||||
|
|
||||||
This program is distributed in the hope that it will be useful,
|
|
||||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
||||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
||||||
GNU Lesser General Public License for more details.
|
|
||||||
|
|
||||||
You should have received a copy of the GNU Lesser General Public License
|
|
||||||
along with this program; if not, write to the Free Software
|
|
||||||
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
||||||
|
|
||||||
*/
|
|
||||||
|
|
||||||
/*
|
|
||||||
|
|
||||||
These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
|
|
||||||
|
|
||||||
*/
|
|
||||||
|
|
||||||
#ifdef HAVE_CONFIG_H
|
|
||||||
#include <config.h>
|
|
||||||
#endif /*HAVE_CONFIG_H*/
|
|
||||||
#include <vips/intl.h>
|
|
||||||
|
|
||||||
#include <stdio.h>
|
|
||||||
#include <stdlib.h>
|
|
||||||
#include <math.h>
|
|
||||||
#include <assert.h>
|
|
||||||
|
|
||||||
#include <vips/vips.h>
|
|
||||||
|
|
||||||
#ifdef WITH_DMALLOC
|
|
||||||
#include <dmalloc.h>
|
|
||||||
#endif /*WITH_DMALLOC*/
|
|
||||||
|
|
||||||
#define RINT( TYPE ) { \
|
|
||||||
TYPE *p = (TYPE *) in; \
|
|
||||||
TYPE *q = (TYPE *) out; \
|
|
||||||
\
|
|
||||||
for( x = 0; x < sz; x++ ) \
|
|
||||||
q[x] = IM_RINT( p[x] );\
|
|
||||||
}
|
|
||||||
|
|
||||||
/* RINT a buffer of PELs.
|
|
||||||
*/
|
|
||||||
static void
|
|
||||||
rint_gen( PEL *in, PEL *out, int width, IMAGE *im )
|
|
||||||
{
|
|
||||||
/* Complex just doubles the size.
|
|
||||||
*/
|
|
||||||
const int sz = width * im->Bands * (im_iscomplex( im ) ? 2 : 1);
|
|
||||||
|
|
||||||
int x;
|
|
||||||
|
|
||||||
switch( im->BandFmt ) {
|
|
||||||
case IM_BANDFMT_COMPLEX:
|
|
||||||
case IM_BANDFMT_FLOAT:
|
|
||||||
RINT( float );
|
|
||||||
break;
|
|
||||||
|
|
||||||
case IM_BANDFMT_DOUBLE:
|
|
||||||
case IM_BANDFMT_DPCOMPLEX:
|
|
||||||
RINT( double );
|
|
||||||
break;
|
|
||||||
|
|
||||||
default:
|
|
||||||
g_assert( 0 );
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* im_rint:
|
|
||||||
* @in: input #IMAGE
|
|
||||||
* @out: output #IMAGE
|
|
||||||
*
|
|
||||||
* Finds the nearest integral value. Copy for integer types,
|
|
||||||
* call IM_RINT() for float and complex types. Output type == input type.
|
|
||||||
*
|
|
||||||
* IM_RINT() is a pseudo-round-to-nearest. It is much faster than
|
|
||||||
* <function>rint</function>(3), but does not give the same result for
|
|
||||||
* negative integral values.
|
|
||||||
*
|
|
||||||
* See also: im_ceil(), im_floor(), im_clip2fmt()
|
|
||||||
*
|
|
||||||
* Returns: 0 on success, -1 on error
|
|
||||||
*/
|
|
||||||
int
|
|
||||||
im_rint( IMAGE *in, IMAGE *out )
|
|
||||||
{
|
|
||||||
if( im_piocheck( in, out ) ||
|
|
||||||
im_check_uncoded( "im_rint", in ) )
|
|
||||||
return( -1 );
|
|
||||||
|
|
||||||
/* Is this one of the int types? Degenerate to im_copy() if it
|
|
||||||
* is.
|
|
||||||
*/
|
|
||||||
if( im_isint( in ) )
|
|
||||||
return( im_copy( in, out ) );
|
|
||||||
|
|
||||||
/* Output type == input type.
|
|
||||||
*/
|
|
||||||
if( im_cp_desc( out, in ) )
|
|
||||||
return( -1 );
|
|
||||||
|
|
||||||
/* Generate!
|
|
||||||
*/
|
|
||||||
if( im_wrapone( in, out,
|
|
||||||
(im_wrapone_fn) rint_gen, in, NULL ) )
|
|
||||||
return( -1 );
|
|
||||||
|
|
||||||
return( 0 );
|
|
||||||
}
|
|
||||||
180
libvips/arithmetic/round.c
Normal file
180
libvips/arithmetic/round.c
Normal file
@ -0,0 +1,180 @@
|
|||||||
|
/* round.c --- various rounding operations
|
||||||
|
*
|
||||||
|
* 20/6/02 JC
|
||||||
|
* - adapted from im_abs()
|
||||||
|
* 29/8/09
|
||||||
|
* - gtkdoc
|
||||||
|
* - tiny cleanups
|
||||||
|
* 19/9/09
|
||||||
|
* - im_ceil.c adapted to make round.c
|
||||||
|
*/
|
||||||
|
|
||||||
|
/*
|
||||||
|
|
||||||
|
This file is part of VIPS.
|
||||||
|
|
||||||
|
VIPS is free software; you can redistribute it and/or modify
|
||||||
|
it under the terms of the GNU Lesser General Public License as published by
|
||||||
|
the Free Software Foundation; either version 2 of the License, or
|
||||||
|
(at your option) any later version.
|
||||||
|
|
||||||
|
This program is distributed in the hope that it will be useful,
|
||||||
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||||
|
GNU Lesser General Public License for more details.
|
||||||
|
|
||||||
|
You should have received a copy of the GNU Lesser General Public License
|
||||||
|
along with this program; if not, write to the Free Software
|
||||||
|
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||||||
|
|
||||||
|
*/
|
||||||
|
|
||||||
|
/*
|
||||||
|
|
||||||
|
These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
|
||||||
|
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifdef HAVE_CONFIG_H
|
||||||
|
#include <config.h>
|
||||||
|
#endif /*HAVE_CONFIG_H*/
|
||||||
|
#include <vips/intl.h>
|
||||||
|
|
||||||
|
#include <stdio.h>
|
||||||
|
#include <stdlib.h>
|
||||||
|
#include <math.h>
|
||||||
|
|
||||||
|
#include <vips/vips.h>
|
||||||
|
|
||||||
|
#ifdef WITH_DMALLOC
|
||||||
|
#include <dmalloc.h>
|
||||||
|
#endif /*WITH_DMALLOC*/
|
||||||
|
|
||||||
|
#define ROUND_LOOP( TYPE, FUN ) { \
|
||||||
|
TYPE *p = (TYPE *) in; \
|
||||||
|
TYPE *q = (TYPE *) out; \
|
||||||
|
\
|
||||||
|
for( x = 0; x < ne; x++ ) \
|
||||||
|
q[x] = FUN( p[x] ); \
|
||||||
|
}
|
||||||
|
|
||||||
|
#define ROUND_BUFFER( FUN ) \
|
||||||
|
static void \
|
||||||
|
FUN ## _buffer( PEL *in, PEL *out, int width, IMAGE *im ) \
|
||||||
|
{ \
|
||||||
|
/* Complex just doubles the size. \
|
||||||
|
*/ \
|
||||||
|
const int ne = width * im->Bands * (im_iscomplex( im ) ? 2 : 1); \
|
||||||
|
\
|
||||||
|
int x; \
|
||||||
|
\
|
||||||
|
switch( im->BandFmt ) { \
|
||||||
|
case IM_BANDFMT_COMPLEX: \
|
||||||
|
case IM_BANDFMT_FLOAT: \
|
||||||
|
ROUND_LOOP( float, FUN ); \
|
||||||
|
break; \
|
||||||
|
\
|
||||||
|
case IM_BANDFMT_DOUBLE: \
|
||||||
|
case IM_BANDFMT_DPCOMPLEX: \
|
||||||
|
ROUND_LOOP( double, FUN ); \
|
||||||
|
break; \
|
||||||
|
\
|
||||||
|
default: \
|
||||||
|
g_assert( 0 ); \
|
||||||
|
} \
|
||||||
|
}
|
||||||
|
|
||||||
|
static int
|
||||||
|
im__round( const char *name, IMAGE *in, IMAGE *out, im_wrapone_fn gen )
|
||||||
|
{
|
||||||
|
if( im_piocheck( in, out ) ||
|
||||||
|
im_check_uncoded( name, in ) )
|
||||||
|
return( -1 );
|
||||||
|
|
||||||
|
/* Is this one of the int types? Degenerate to im_copy() if it
|
||||||
|
* is.
|
||||||
|
*/
|
||||||
|
if( im_isint( in ) )
|
||||||
|
return( im_copy( in, out ) );
|
||||||
|
|
||||||
|
/* Output type == input type.
|
||||||
|
*/
|
||||||
|
if( im_cp_desc( out, in ) )
|
||||||
|
return( -1 );
|
||||||
|
|
||||||
|
/* Generate!
|
||||||
|
*/
|
||||||
|
if( im_wrapone( in, out, (im_wrapone_fn) gen, in, NULL ) )
|
||||||
|
return( -1 );
|
||||||
|
|
||||||
|
return( 0 );
|
||||||
|
}
|
||||||
|
|
||||||
|
ROUND_BUFFER( ceil )
|
||||||
|
|
||||||
|
/**
|
||||||
|
* im_ceil:
|
||||||
|
* @in: input #IMAGE
|
||||||
|
* @out: output #IMAGE
|
||||||
|
*
|
||||||
|
* For each pixel, find the smallest integral value not less than.
|
||||||
|
* Copy for integer types, call <function>ceil(3)</function> for float and
|
||||||
|
* complex types.
|
||||||
|
* Output type == input type.
|
||||||
|
*
|
||||||
|
* See also: im_floor(), im_rint(), im_clip2fmt()
|
||||||
|
*
|
||||||
|
* Returns: 0 on success, -1 on error
|
||||||
|
*/
|
||||||
|
int
|
||||||
|
im_ceil( IMAGE *in, IMAGE *out )
|
||||||
|
{
|
||||||
|
return( im__round( "im_ceil", in, out, (im_wrapone_fn) ceil_buffer ) );
|
||||||
|
}
|
||||||
|
|
||||||
|
ROUND_BUFFER( floor )
|
||||||
|
|
||||||
|
/**
|
||||||
|
* im_floor:
|
||||||
|
* @in: input #IMAGE
|
||||||
|
* @out: output #IMAGE
|
||||||
|
*
|
||||||
|
* For each pixel, find the largest integral value not less than.
|
||||||
|
* Copy for integer types, call <function>floor()</function> for float and
|
||||||
|
* complex types.
|
||||||
|
* Output type == input type.
|
||||||
|
*
|
||||||
|
* See also: im_ceil(), im_rint(), im_clip2fmt()
|
||||||
|
*
|
||||||
|
* Returns: 0 on success, -1 on error
|
||||||
|
*/
|
||||||
|
int
|
||||||
|
im_floor( IMAGE *in, IMAGE *out )
|
||||||
|
{
|
||||||
|
return( im__round( "im_floor", in, out,
|
||||||
|
(im_wrapone_fn) floor_buffer ) );
|
||||||
|
}
|
||||||
|
|
||||||
|
ROUND_BUFFER( IM_RINT )
|
||||||
|
|
||||||
|
/**
|
||||||
|
* im_rint:
|
||||||
|
* @in: input #IMAGE
|
||||||
|
* @out: output #IMAGE
|
||||||
|
*
|
||||||
|
* Finds the nearest integral value. Copy for integer types,
|
||||||
|
* call IM_RINT() for float and complex types. Output type == input type.
|
||||||
|
*
|
||||||
|
* IM_RINT() is a pseudo-round-to-nearest. It is much faster than
|
||||||
|
* <function>rint</function>(3), but does not give the same result for
|
||||||
|
* negative integral values.
|
||||||
|
*
|
||||||
|
* See also: im_ceil(), im_floor(), im_clip2fmt()
|
||||||
|
*
|
||||||
|
* Returns: 0 on success, -1 on error
|
||||||
|
*/
|
||||||
|
int
|
||||||
|
im_rint( IMAGE *in, IMAGE *out )
|
||||||
|
{
|
||||||
|
return( im__round( "im_rint", in, out, (im_wrapone_fn) IM_RINT_buffer ) );
|
||||||
|
}
|
||||||
Loading…
x
Reference in New Issue
Block a user