version 1.2, 2007/05/29 08:55:34
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version 1.5, 2007/06/09 15:55:45
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Line 7 c-function strlen strlen a -- n
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Line 7 c-function strlen strlen a -- n
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cr s\" fooo\0" 2dup dump drop .s strlen cr .s drop cr |
cr s\" fooo\0" 2dup dump drop .s strlen cr .s drop cr |
c-function labs labs n -- n |
c-function labs labs n -- n |
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\c #define _FILE_OFFSET_BITS 64 |
\c #include <sys/types.h> |
\c #include <sys/types.h> |
\c #include <unistd.h> |
\c #include <unistd.h> |
c-function dlseek lseek n d n -- d |
c-function dlseek lseek n d n -- d |
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cr s\" fooo\0" 2dup dump drop .s strlen cr .s drop cr |
cr s\" fooo\0" 2dup dump drop .s strlen cr .s drop cr |
-5 labs .s drop cr |
-5 labs .s drop cr |
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\c #include <stdio.h> |
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c-function printf-nr printf a n r -- n |
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c-function printf-rn printf a r n -- n |
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s\" n=%d r=%f\n\0" drop -5 -0.5e fp@ hex. cr printf-nr . cr |
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s\" r=%f n=%d\n\0" drop -0.5e -5 printf-rn . cr |
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\c #define printfull(s,ull) printf(s,(unsigned long long)ull) |
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c-function printfull printfull a n -- n |
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s\" ull=%llu\n\0" drop -1 printfull . cr |
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s\" ull=%llu r=%f\n\0" drop -1 -0.5e printf-nr . cr |
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\c #define printfll(s,ll) printf(s,(long long)ll) |
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c-function printfll printfll a n -- n |
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s\" ll=%lld\n\0" drop -1 printfll . cr |
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s\" ll=%lld r=%f\n\0" drop -1 -0.5e printf-nr . cr |
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\ test calling a C function pointer from Forth |
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\ first create a C function pointer: |
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\c typedef long (* func1)(long); |
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\c #define labsptr(dummy) ((func1)labs) |
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c-function labsptr labsptr -- a |
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\ now the call |
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\c #define call_func1(par1,fptr) ((func1)fptr)(par1) |
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c-function call_func1 call_func1 n func -- n |
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-5 labsptr call_func1 . cr |
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