PLplot: plmem.c Source File

PLplot 5.15.0

plmem.c
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1 // xId: plmem.c 11966 2011-10-14 07:10:05Z andrewross $
2 //
3 // plmem.c
4 //
5 // Copyright (C) 1992, 1993, 1994, 1995
6 // Maurice LeBrun mjl@dino.ph.utexas.edu
7 // Institute for Fusion Studies University of Texas at Austin
8 //
9 // Copyright (C) 2004 Joao Cardoso
10 // Copyright (C) 2004-2018 Alan W. Irwin
11 // Copyright (C) 2004 Andrew Ross
12 //
13 // This file is part of PLplot.
14 //
15 // PLplot is free software; you can redistribute it and/or modify
16 // it under the terms of the GNU Library General Public License as published
17 // by the Free Software Foundation; either version 2 of the License, or
18 // (at your option) any later version.
19 //
20 // PLplot is distributed in the hope that it will be useful,
21 // but WITHOUT ANY WARRANTY; without even the implied warranty of
22 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 // GNU Library General Public License for more details.
24 //
25 // You should have received a copy of the GNU Library General Public License
26 // along with PLplot; if not, write to the Free Software
27 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
28 //
29 //--------------------------------------------------------------------------
30 //
31
36
37 #include "plplotP.h"
38
39 //--------------------------------------------------------------------------
40 //
58 //--------------------------------------------------------------------------
59
60 void
61 plStatic2dGrid( PLFLT_NC_MATRIX zIliffe, PLFLT_VECTOR zStatic, PLINT nx, PLINT ny )
62 {
63 PLINT i;
64
65 for ( i = 0; i < nx; i++ )
66 {
67 zIliffe[i] = (PLFLT_NC_SCALAR) ( zStatic + i * ny );
68 }
69 }
70
71 //--------------------------------------------------------------------------
72 //
88 //--------------------------------------------------------------------------
89
90 void
91 plAlloc2dGrid( PLFLT ***f, PLINT nx, PLINT ny )
92 {
93 PLINT i;
94
95 if ( ( *f = (PLFLT **) calloc( (size_t) nx, sizeof ( PLFLT * ) ) ) == NULL )
96 plexit( "Memory allocation error in \"plAlloc2dGrid\"" );
97
98 for ( i = 0; i < nx; i++ )
99 {
100 if ( ( ( *f )[i] = (PLFLT *) calloc( (size_t) ny, sizeof ( PLFLT ) ) ) == NULL )
101 plexit( "Memory allocation error in \"plAlloc2dGrid\"" );
102 }
103 }
104
105 //--------------------------------------------------------------------------
106 // plFree2dGrid()
107 //
113 //--------------------------------------------------------------------------
114
115 void
116 plFree2dGrid( PLFLT **f, PLINT nx, PLINT PL_UNUSED( ny ) )
117 {
118 PLINT i;
119
120 for ( i = 0; i < nx; i++ )
121 free( (void *) f[i] );
122
123 free( (void *) f );
124 }
125
126 //--------------------------------------------------------------------------
127 // plMinMax2dGrid()
128 //
138 //--------------------------------------------------------------------------
139
140 void
141 plMinMax2dGrid( PLFLT_MATRIX f, PLINT nx, PLINT ny, PLFLT *fnmax, PLFLT *fnmin )
142 {
143 int i, j;
144 PLFLT m, M;
145
146 if ( !isfinite( f[0][0] ) )
147 {
148 M = -HUGE_VAL;
149 m = HUGE_VAL;
150 }
151 else
152 M = m = f[0][0];
153
154 for ( i = 0; i < nx; i++ )
155 {
156 for ( j = 0; j < ny; j++ )
157 {
158 if ( !isfinite( f[i][j] ) )
159 continue;
160 if ( f[i][j] > M )
161 M = f[i][j];
162 if ( f[i][j] < m )
163 m = f[i][j];
164 }
165 }
166 *fnmax = M;
167 *fnmin = m;
168 }
plplotP.h
PLFLT_NC_SCALAR
PLFLT * PLFLT_NC_SCALAR
Definition: plplot.h:233
plexit
void plexit(PLCHAR_VECTOR errormsg)
Definition: plctrl.c:1958
PLFLT_MATRIX
const PLFLT *const * PLFLT_MATRIX
Definition: plplot.h:253
HUGE_VAL
#define HUGE_VAL
Definition: plplotP.h:274
PLINT
int PLINT
Definition: plplot.h:181
M
#define M
Definition: mt19937ar.c:56
plFree2dGrid
void plFree2dGrid(PLFLT **f, PLINT nx, PLINT PL_UNUSED(ny))
Definition: plmem.c:116
isfinite
#define isfinite(x)
Definition: plplotP.h:268
PL_UNUSED
#define PL_UNUSED(x)
Definition: plplot.h:138
PLFLT
float PLFLT
Definition: plplot.h:163
plAlloc2dGrid
void plAlloc2dGrid(PLFLT ***f, PLINT nx, PLINT ny)
Definition: plmem.c:91
PLFLT_NC_MATRIX
PLFLT ** PLFLT_NC_MATRIX
Definition: plplot.h:248
plStatic2dGrid
void plStatic2dGrid(PLFLT_NC_MATRIX zIliffe, PLFLT_VECTOR zStatic, PLINT nx, PLINT ny)
Definition: plmem.c:61
PLFLT_VECTOR
const PLFLT * PLFLT_VECTOR
Definition: plplot.h:244
plMinMax2dGrid
void plMinMax2dGrid(PLFLT_MATRIX f, PLINT nx, PLINT ny, PLFLT *fnmax, PLFLT *fnmin)
Definition: plmem.c:141