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  • uspace/lib/posix/include/posix/float.h

    rc84f1a4 ra3da2b2  
    3636#define POSIX_FLOAT_H_
    3737
    38 /*
    39  * The macros defined below are needed for compilation of MPFR
    40  * (http://www.mpfr.org/). Probably, they should be provided by GCC
    41  * itself but that does not work for cross-compilation.
    42  *
    43  * They are intentionally guarded by the given macro to ensure that anyone
    44  * who wants them states this explicitly.
    45  *
    46  * The values are the ones GCC prints when compiled on i686 Linux.
    47  *
    48  * WARNING: the values are not accurate (especially the long double ones)!
    49  *
    50  */
    51 #ifdef FLOAT_H_YES_I_REALLY_WANT_LIMITS
    52 
    53 /* float limits */
    54 #define FLT_MIN 1.1754943508222875079687365372222456778186655567720875215087517062784172594547271728515625e-38
    55 #define FLT_MAX 340282346638528859811704183484516925440
    56 
    57 /* double limits */
    58 #define DBL_MIN 2.2250738585072013830902327173324040642192159804623318305533274168872044348139181958542831590125110205640673397310358110051524341615534601088560123853777188211307779935320023304796101474425836360719216e-308
    59 #define DBL_MAX 1.7976931348623157081452742373170435679807056752584499659891747680315726078002853876058955863276687817154045895351438246423432132688946418276846754670353751698604991057655128207624549009038932894407587e+308
    60 
    61 /* long double limits */
    62 #define LDBL_MIN 3.3621031431120935062626778173217526025980793448464712401088272298087426993907289670430927063650562228625019066688234732270901114717276781407474941951906317291667263914849985862188944930687409323125832e-4932L
    63 #define LDBL_MAX 1.1897314953572317650212638530309702051690633222946242004403237338917370055229707226164102903365288828535456978074955773144274431536702884341981255738537436786735932007069732632019159182829615243655295e+4932L
    64 
    65 /* epsilons */
    66 #define FLT_EPSILON 1.1920928955078125e-07
    67 #define DBL_EPSILON 2.220446049250313080847263336181640625e-16
    68 #define LDBL_EPSILON 1.08420217248550443400745280086994171142578125e-19L
    69 
    70 /* float radix */
    71 #define FLT_RADIX 2
    72 
    73 /* mantisa */
    74 #define FLT_MANT_DIG 24
    75 #define DBL_MANT_DIG 53
    76 #define LDBL_MANT_DIG 64
    77 
    78 /* exponents */
    79 #define DBL_MIN_EXP -1021
    80 #define DBL_MAX_EXP 1024
    81 
    82 #endif
     38/* Empty. Just to satisfy preprocessor. */
    8339
    8440#endif /* POSIX_FLOAT_H_ */
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