23 lines
377 B
C
23 lines
377 B
C
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#include <stdio.h>
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#include <stdint.h>
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int extractExp(float f) {
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union {
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float f;
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struct {
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uint32_t mantissa : 23;
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uint32_t exp : 8;
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uint32_t s : 1;
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} field;
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} fl;
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fl.f = f;
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return fl.field.exp;
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}
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int main(void)
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{
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float f = 1.423;
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printf("exp = %d\n",extractExp(f)-127);
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return 0;
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}
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