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float.h: Define FLT_ROUNDS if not defined by toolchain previously

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This value is necessary to build third-party applications on NuttX.
If not defined previously by the toolchain, define it at NuttX's
`lib/float.h`.
This commit is contained in:
Tiago Medicci Serrano 2024-12-02 14:39:46 -03:00 • committed by Xiang Xiao
parent e1e1d534af
commit 1dd8178bdc
1 changed files with 6 additions and 0 deletions
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6
include/nuttx/lib/float.h
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@ -42,6 +42,12 @@
#define FLT_RADIX 2
/* Addition rounds to 0: zero, 1: nearest, 2: +inf, 3: -inf, -1: unknown. */
#ifndef FLT_ROUNDS /* May be defined in a toolchain header */
# define FLT_ROUNDS 1
#endif
/* Number of base-FLT_RADIX digits in the floating-point significand, p. */
#ifndef FLT_MANT_DIG /* May be defined in a toolchain header */