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Modify nan screening for Mac #501

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Merged
merged 11 commits into from
Sep 23, 2024
Merged

Modify nan screening for Mac #501

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4f85ef8
Add nan bit mask.
spahrenk Sep 3, 2024
afb752e
Change ISNCHOICE condition.
spahrenk Sep 7, 2024
4a3ec0d
Identify quiet nan.
spahrenk Sep 7, 2024
d573db1
Update mac refs.
spahrenk Sep 8, 2024
710ccec
Define isQuietNan(float).
spahrenk Sep 8, 2024
186afd2
Define isNan(float).
spahrenk Sep 9, 2024
17bb39f
Apply inline functions.
spahrenk Sep 9, 2024
ea5a7c9
Fix typo.
spahrenk Sep 9, 2024
b28e2fc
Revert refs; remove inline fncs; restore format.
spahrenk Sep 11, 2024
f1b13f0
Restore format.
spahrenk Sep 11, 2024
ebc7fb4
Remove header change.
spahrenk Sep 11, 2024
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2 changes: 1 addition & 1 deletion src/cnglob.h
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Original file line number Diff line number Diff line change
Expand Up @@ -411,7 +411,7 @@ template<typename T> inline NANDAT AsNANDAT(T& v) { return *reinterpret_cast<con

#define NCNAN 0x7f80 // bits that make nchoice a nan; is combined with choice index 1-7f to form stored value
// macro to test if n has an NCHOICE value:
#define ISNCHOICE(n) ((AsNANDAT(n) & 0xff800000L)==0x7f800000L)
#define ISNCHOICE(n) ((AsNANDAT(n) & 0xff800000L)==0x7f800000L) && ((AsNANDAT(n) & 0x7FFFFFL) != 0x400000L)
// macro to generate 32-bit value from 16-bit choice constants, for use where full value needed, as in initialized data
// usage: float y = NCHOICE(C_ABCNC_X);
#define NCHOICE(nck) (NANDAT(static_cast<uint32_t>(nck) << 16)) // put in hi word. nck must include 0x7f80.
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