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Prevent abs() macro from sign-flipping 0.0F #8116

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Prevent abs() macro from sign-flipping 0.0F #8116

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2 changes: 1 addition & 1 deletion cores/esp8266/Arduino.h
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Original file line number Diff line number Diff line change
Expand Up @@ -217,7 +217,7 @@ void optimistic_yield(uint32_t interval_us);
// undefine stdlib's definitions when encountered, provide abs that supports floating point for C code
#ifndef __cplusplus
#undef abs
#define abs(x) ({ __typeof__(x) _x = (x); _x > 0 ? _x : -_x; })
#define abs(x) ({ __typeof__(x) _x = (x); _x >= 0 ? _x : -_x; })
#undef round
#define round(x) ({ __typeof__(x) _x = (x); _x >= 0 ? (long)(_x + 0.5) : (long)(_x - 0.5); })
#endif // ifndef __cplusplus
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