我一直在尝试编译这个C程序，但它因指针和结构不兼容的一些编译错误而中断。请参阅下面的编译错误。我似乎不知道如何解决这个问题。任何帮助将不胜感激。
build/user/junyan/fft3d_JYAN.c: In function 'fft2d_init':
build/user/junyan/fft3d_JYAN.c:45: warning: assignment from incompatible pointer type
build/user/junyan/fft3d_JYAN.c:46: warning: assignment from incompatible pointer type
build/user/junyan/fft3d_JYAN.c: In function 'fft2d_JYAN':
build/user/junyan/fft3d_JYAN.c:73: error: invalid use of undefined type 'struct kiss_fft_cpx'
build/user/junyan/fft3d_JYAN.c:73: error: dereferencing pointer to incomplete type
build/user/junyan/fft3d_JYAN.c:78: error: invalid use of undefined type 'struct kiss_fft_cpx'
build/user/junyan/fft3d_JYAN.c:78: error: dereferencing pointer to incomplete type
build/user/junyan/fft3d_JYAN.c:94: warning: passing argument 3 of 'kiss_fft_stride' from incompatible pointer type
build/include/rsf.h:152: note: expected 'struct kiss_fft_cpx *' but argument is of type 'struct kiss_fft_cpx *'
build/user/junyan/fft3d_JYAN.c:95: error: invalid use of undefined type 'struct kiss_fft_cpx'
build/user/junyan/fft3d_JYAN.c:95: error: dereferencing pointer to incomplete type
build/user/junyan/fft3d_JYAN.c:103: warning: passing argument 3 of 'kiss_fft_stride' from incompatible pointer type
build/include/rsf.h:152: note: expected 'struct kiss_fft_cpx *' but argument is of type 'struct kiss_fft_cpx *'
build/user/junyan/fft3d_JYAN.c:104: error: invalid use of undefined type 'struct kiss_fft_cpx'
build/user/junyan/fft3d_JYAN.c:104: error: dereferencing pointer to incomplete type
build/user/junyan/fft3d_JYAN.c: In function 'fft3d_init':
build/user/junyan/fft3d_JYAN.c:123: warning: assignment from incompatible pointer type
build/user/junyan/fft3d_JYAN.c:124: warning: assignment from incompatible pointer type
build/user/junyan/fft3d_JYAN.c:125: warning: assignment from incompatible pointer type
build/user/junyan/fft3d_JYAN.c: In function 'fft3d_JYAN':
build/user/junyan/fft3d_JYAN.c:155: error: invalid use of undefined type 'struct kiss_fft_cpx'
build/user/junyan/fft3d_JYAN.c:155: error: dereferencing pointer to incomplete type
build/user/junyan/fft3d_JYAN.c:160: error: invalid use of undefined type 'struct kiss_fft_cpx'
build/user/junyan/fft3d_JYAN.c:160: error: dereferencing pointer to incomplete type
build/user/junyan/fft3d_JYAN.c:165: error: incompatible type for argument 1 of 'sf_crealf'
build/include/rsf.h:1542: note: expected 'kiss_fft_cpx' but argument is of type 'struct kiss_fft_cpx *'
build/user/junyan/fft3d_JYAN.c:166: error: invalid operands to binary / (have 'float *' and 'int')
build/user/junyan/fft3d_JYAN.c:177: warning: passing argument 3 of 'kiss_fft_stride' from incompatible pointer type
build/include/rsf.h:152: note: expected 'struct kiss_fft_cpx *' but argument is of type 'struct kiss_fft_cpx *'
build/user/junyan/fft3d_JYAN.c:178: error: invalid use of undefined type 'struct kiss_fft_cpx'
build/user/junyan/fft3d_JYAN.c:178: error: dereferencing pointer to incomplete type
build/user/junyan/fft3d_JYAN.c:184: error: incompatible type for argument 1 of 'sf_cneg'
build/include/rsf.h:1578: note: expected 'kiss_fft_cpx' but argument is of type 'struct kiss_fft_cpx *'
build/user/junyan/fft3d_JYAN.c:186: warning: passing argument 2 of 'kiss_fft_stride' from incompatible pointer type
build/include/rsf.h:152: note: expected 'const struct kiss_fft_cpx *' but argument is of type 'struct kiss_fft_cpx **'
build/user/junyan/fft3d_JYAN.c:186: warning: passing argument 3 of 'kiss_fft_stride' from incompatible pointer type
build/include/rsf.h:152: note: expected 'struct kiss_fft_cpx *' but argument is of type 'struct kiss_fft_cpx *'
build/user/junyan/fft3d_JYAN.c:187: error: invalid use of undefined type 'struct kiss_fft_cpx'
build/user/junyan/fft3d_JYAN.c:187: error: dereferencing pointer to incomplete type
build/user/junyan/fft3d_JYAN.c:190: error: expected declaration or statement at end of input
build/user/junyan/fft3d_JYAN.c:148: warning: unused variable 'iky'
scons: *** [build/user/junyan/fft3d_JYAN.o] Error 1
scons: building terminated because of errors.
make: *** [all] Error 2
C 程序
/* 3-D Fourier transform */
/*
Copyright (C) 2010 University of Texas at Austin
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU 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 General Public License for more details.
You should have received a copy of the GNU 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
*/
#include <rsf.h>
static int nkx,nky,nkz;
static kiss_fft_cfg cfgx,cfgxi,cfgy,cfgyi,cfgz,cfgzi;
static kiss_fft_cpx *ctracex,*ctracey,*ctracez;
int fft_nk(int n, int opt)
/*< wavenumber for FT >*/
{
int nk;
nk = opt? kiss_fft_next_fast_size(n): n;
return nk;
}
void fft2d_init(int nz, int nx, int opt)
/*< 2D fft init >*/
{
nkx = opt? kiss_fft_next_fast_size(nx): nx;
nkz = opt? kiss_fft_next_fast_size(nz): nz;
cfgx = kiss_fft_alloc(nkx,0,NULL,NULL);
cfgxi = kiss_fft_alloc(nkx,1,NULL,NULL);
cfgz = kiss_fft_alloc(nkz,0,NULL,NULL);
cfgzi = kiss_fft_alloc(nkz,1,NULL,NULL);
ctracex = (kiss_fft_cpx *) sf_complexalloc(nkx);
ctracez = (kiss_fft_cpx *) sf_complexalloc(nkz);
}
void fft2d_close()
/*< 2D fft close >*/
{
free(ctracex);
free(ctracez);
free(cfgx);
free(cfgxi);
free(cfgz);
free(cfgzi);
}
void fft2d_JYAN(bool inv, /* forward or inverse */
int nz, int nx, /* dimensions */
kiss_fft_cpx **data, /* data [nkx][nkz] */
float **datrl /* if inv==1 * datrl[nx][nz] */)
/*< 2-D transform >*/
{
int ix, iz, ikx, ikz;
if (inv) {
/* Inverse FFT*/
for (ikz=0; ikz < nkz; ikz++){
/* Inverse Fourier transform kx to x */
kiss_fft_stride(cfgxi,(kiss_fft_cpx *)data[0]+ikz,(kiss_fft_cpx *)ctracex,nkz);
for (ikx=0; ikx < nkx; ikx++) data[ikx][ikz] = sf_crmul(ctracex[ikx],ikx%2?-1.0:1.0);
}
for (ikx=0; ikx < nkx; ikx++){
/* Inverse Fourier transform kz to z */
kiss_fft_stride(cfgzi,(kiss_fft_cpx *)data[ikx],(kiss_fft_cpx *)ctracez,1);
for (ikz=0; ikz < nkz; ikz++) data[ikx][ikz] = sf_crmul(ctracez[ikz],ikz%2?-1.0:1.0);
}
for (ix=0; ix < nx; ix++){
for (iz=0; iz < nz; iz++){
datrl[ix][iz] = sf_crealf(data[ix][iz]);
datrl[ix][iz] /= (nkx*nkz);
}
}
} else {
/* compute u(kx,kz) */
for (ix=0; ix < nx; ix++){
/* Fourier transform z to kz */
for (iz=1; iz < nz; iz+=2){
data[ix][iz] = sf_cneg(data[ix][iz]);
}
kiss_fft_stride(cfgz,data[ix],ctracez,1);
for (ikz=0; ikz<nkz; ikz++) data[ix][ikz] = ctracez[ikz];
}
for (ikz=0; ikz < nkz; ikz++){
/* Fourier transform x to kx */
for (ikx=1; ikx<nkx; ikx+=2){
data[ikx][ikz] = sf_cneg(data[ikx][ikz]);
}
kiss_fft_stride(cfgx,data[0]+ikz,ctracex,nkz);
for (ikx=0; ikx<nkx; ikx++) data[ikx][ikz] = ctracex[ikx];
}
}
}
void fft3d_init(int nz, int nx, int ny, int opt)
/*< 3D fft init >*/
{
nkx = opt? kiss_fft_next_fast_size(nx): nx;
nky = opt? kiss_fft_next_fast_size(ny): ny;
nkz = opt? kiss_fft_next_fast_size(nz): nz;
cfgx = kiss_fft_alloc(nkx,0,NULL,NULL);
cfgxi = kiss_fft_alloc(nkx,1,NULL,NULL);
cfgy = kiss_fft_alloc(nky,0,NULL,NULL);
cfgyi = kiss_fft_alloc(nky,1,NULL,NULL);
cfgz = kiss_fft_alloc(nkz,0,NULL,NULL);
cfgzi = kiss_fft_alloc(nkz,1,NULL,NULL);
ctracex = (kiss_fft_cpx *) sf_complexalloc(nkx);
ctracey = (kiss_fft_cpx *) sf_complexalloc(nky);
ctracez = (kiss_fft_cpx *) sf_complexalloc(nkz);
}
void fft3d_close()
/*< 3D fft close >*/
{
free(ctracex);
free(ctracey);
free(ctracez);
free(cfgx);
free(cfgxi);
free(cfgy);
free(cfgyi);
free(cfgz);
free(cfgzi);
}
void fft3d_JYAN(bool inv, /* forward or inverse */
int nz, int nx, int ny, /* dimensions */
kiss_fft_cpx ***data, /* data [nky][nkx][nkz] */
float ***datrl /* if inv==1 * datrl[ny][nx][nz] */)
/*< 3-D transform >*/
{
int ix, iy, iz, ikx, iky, ikz;
if (inv) {
/* Inverse FFT*/
for (ikz=0; ikz < nkz; ikz++){
/* Inverse Fourier transform kx to x */
kiss_fft_stride(cfgxi,(kiss_fft_cpx *)data[0]+ikz,(kiss_fft_cpx *)ctracex,nkz);
for (ikx=0; ikx < nkx; ikx++) data[ikx][ikz] = sf_crmul(ctracex[ikx],ikx%2?-1.0:1.0);
}
for (ikx=0; ikx < nkx; ikx++){
/* Inverse Fourier transform kz to z */
kiss_fft_stride(cfgzi,(kiss_fft_cpx *)data[ikx],(kiss_fft_cpx *)ctracez,1);
for (ikz=0; ikz < nkz; ikz++) data[ikx][ikz] = sf_crmul(ctracez[ikz],ikz%2?-1.0:1.0);
}
for (ix=0; ix < nx; ix++){
for (iz=0; iz < nz; iz++){
datrl[ix][iz] = sf_crealf(data[ix][iz]);
datrl[ix][iz] /= (nkx*nkz);
}
}
} else {
/* compute u(kx,kz) */
for (iy=0; iy < ny; iy++) {
for (ix=0; ix < nx; ix++) {
/* Fourier transform z to kz */
for (iz=1; iz < nz; iz+=2){
data[iy][ix][iz] = sf_cneg(data[iy][ix][iz]);
}
kiss_fft_stride(cfgz,data[iy][ix],ctracez,1);
for (ikz=0; ikz<nkz; ikz++) data[iy][ix][ikz] = ctracez[ikz];
}
for (ikz=0; ikz < nkz; ikz++){
/* Fourier transform x to kx */
for (ikx=1; ikx<nkx; ikx+=2){
data[ikx][ikz] = sf_cneg(data[ikx][ikz]);
}
kiss_fft_stride(cfgx,data[0]+ikz,ctracex,nkz);
for (ikx=0; ikx<nkx; ikx++) data[ikx][ikz] = ctracex[ikx];
}
}
}
最佳答案
显然，文件 rsf.h 导致这些声明被处理:
struct kiss_fft_cpx;
typedef struct kiss_fft_cpx kiss_fft_cpx;
但它没有声明struct Kiss_fft_cpx的成员。 header 可能存在错误，但如果它附带经过测试的第三方代码，那么更有可能的期望是您提供您自己的struct成员声明。这样的声明将特定于您的特定应用程序(否则没有充分的理由这样做)，但它可能是这样的:
struct kiss_fft_cpx {
double real;
double imag;
};
如果这是所需要的，那么文档应该描述执行此操作的要求，以及对struct形式的期望。这样的声明最好在包含 header 之后立即进行。如果您需要在多个文件中使用它，那么您应该将其放入您自己的私有(private) header 中。
关于由于指针类型不兼容而导致编译错误，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/27783365/