uldiv.h

来自「开放源码的编译器open watcom 1.6.0版的源代码」· C头文件 代码 · 共 58 行

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*
*                            Open Watcom Project
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*    This file contains Original Code and/or Modifications of Original
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#include <stdlib.h>

typedef struct  {
        unsigned long   quot;
        unsigned long   rem;
} uldiv_t;

#ifdef __386__
#pragma aux u_ldiv parm [eax] [ebx] [esi] modify [edx] = \
        "xor edx, edx" \
        "div ebx" \
        "mov [esi], eax" \
        "mov 4[esi], edx";
#else
extern void     __U4D(void);

#pragma aux u_ldiv parm [dx ax] [cx bx] [es si] = \
        "call   __U4D"          \
        "mov    es:0[si], ax"   \
        "mov    es:2[si], dx"   \
        "mov    es:4[si], bx"   \
        "mov    es:6[si], cx"
#endif

extern void u_ldiv( unsigned long a, unsigned long b, uldiv_t *buff );