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543e0256c1
FUNC_ATTR_* should only be used in .c files with generated headers. Defining FUNC_ATTR_* as empty in headers causes misuses of them to be silently ignored. Instead don't define them by default, and only define them as empty after a .c file has included its generated header.
43 lines
666 B
C
43 lines
666 B
C
// uncrustify:off
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#include <math.h>
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// uncrustify:on
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#include <stdint.h>
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#include <string.h>
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#include "nvim/math.h"
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#ifdef INCLUDE_GENERATED_DECLARATIONS
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# include "math.c.generated.h"
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#endif
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int xfpclassify(double d)
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FUNC_ATTR_CONST
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{
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uint64_t m;
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memcpy(&m, &d, sizeof(m));
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int e = 0x7ff & (m >> 52);
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m = 0xfffffffffffffULL & m;
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switch (e) {
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default:
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return FP_NORMAL;
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case 0x000:
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return m ? FP_SUBNORMAL : FP_ZERO;
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case 0x7ff:
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return m ? FP_NAN : FP_INFINITE;
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}
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}
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int xisinf(double d)
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FUNC_ATTR_CONST
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{
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return FP_INFINITE == xfpclassify(d);
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}
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int xisnan(double d)
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FUNC_ATTR_CONST
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{
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return FP_NAN == xfpclassify(d);
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}
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