54 lines
1.7 KiB
C
54 lines
1.7 KiB
C
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/**
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* \file
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* \brief NgSpice D_PROCESS Interface
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* \author Uros Platise <uros@isotel.eu>
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*/
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#ifndef __NGSPICE_D_PROCESS__
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#define __NGSPICE_D_PROCESS__
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#include <stdio.h>
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#if !defined(_MSC_VER)
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#include <unistd.h>
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#endif
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#include <stdint.h>
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#define D_PROCESS_FORMAT_VERSION 0x01
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#define D_PROCESS_DLEN(x) (uint8_t)( ((x)==0) ? 0 : (((x)-1)/8 + 1) )
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static inline int d_process_init(int pipein, int pipeout, uint8_t N_din, uint8_t N_dout) {
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#if defined(_MSC_VER) || defined(__MINGW64__)
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#pragma pack(push, 1)
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struct header_s {
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uint8_t version, N_din, N_dout;
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} header;
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#pragma pack(pop)
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#else
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struct header_s {
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uint8_t version, N_din, N_dout;
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} __attribute__((packed))header;
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#endif
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#if defined(_MSC_VER) || defined(__MINGW64__)
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if (_read(pipein, &header, sizeof(header)) != sizeof(header)) {
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#else
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if (read(pipein, &header, sizeof(header)) != sizeof(header)) {
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#endif
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fprintf(stderr, "Error: Incompatible ngspice d_process header size, requiring version %d\n", header.version);
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return 0;
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}
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if (header.version != D_PROCESS_FORMAT_VERSION || header.N_din != N_din || header.N_dout != N_dout) {
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fprintf(stderr, "Error: Incompatible ngspice d_process requiring version %d, number of inputs %d expected %d, and outputs %d expected %d.\n",
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header.version, header.N_din, N_din, header.N_dout, N_dout);
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return 0;
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}
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#if defined(_MSC_VER) || defined(__MINGW64__)
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_write(pipeout, &header, sizeof(header)); // acknowledge connection by returning back the same header
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#else
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write(pipeout, &header, sizeof(header)); // acknowledge connection by returning back the same header
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#endif
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return 1;
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}
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#endif
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