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23 lines
462 B
C
23 lines
462 B
C
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#include <stdio.h>
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#include <math.h>
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int target_isinf(double x) {
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union {
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double d;
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struct {
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unsigned mantissa2;
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unsigned mantissa1 : 20;
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unsigned exponent : 11;
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unsigned sign : 1;
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} big_endian;
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} u;
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u.d = x;
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return (u.big_endian.exponent == 2047 && u.big_endian.mantissa1 == 0 && u.big_endian.mantissa2 == 0);
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}
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int main() {
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printf("%d %d\n", target_isinf(1234.42), target_isinf(INFINITY));
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return 0;
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}
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