Gw-instek GDS-2000 series Programming manual Manual de usuario descargar pdf (Pagina 93)

GDS-2000 Series Programming Manual

Appendix A: How can we convert the hexadecimal format to a floating point

format

Question: As the previous example listed on page 32, how can the hexadecimal

value of “0×34 0×56 0×BF 0×94” transfer to 200ns?

Answer:

just use the attached C language program:

#include <stdio.h>

int main()

{

union data

{

char a[4];

float f;

} myData;

myData.a[0]=0x94; /* little-endian byte ordering here, */

myData.a[1]=0xBF; /* so, the last of 0x94 should be placed */

myData.a[2]=0x56; /* in the first order. */

myData.a[3]=0x34;

printf("Here is the Data:\n%0x\n%0x\n%0x\n%0x\n%.3e\n",\

myData.a[0]&0xff,

myData.a[1]&0xff,

myData.a[2]&0xff,

myData.a[3]&0xff,\

myData.f );

return 0;

}

and the output result is following: 2.000e -007=200ns

1 2 ... 88 89 90 91 92 93

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Gw-instek GDS-2000 series Programming manual Manual de usuario Pagina 93