// RUN: %clang_cc1 -fsyntax-only -verify -std=c89 -ffreestanding %s // RUN: %clang_cc1 -fsyntax-only -verify -std=c99 -ffreestanding %s // RUN: %clang_cc1 -fsyntax-only -verify -std=c11 -ffreestanding %s // RUN: %clang_cc1 -fsyntax-only -verify -xc++ -std=c++11 -ffreestanding %s // RUN: %clang_cc1 -fsyntax-only -verify -xc++ -std=c++14 -ffreestanding %s // RUN: %clang_cc1 -fsyntax-only -verify -xc++ -std=c++17 -ffreestanding %s // expected-no-diagnostics /* Basic floating point conformance checks against: - N1570 draft of C11 Std. - N1256 draft of C99 Std. - http://port70.net/~nsz/c/c89/c89-draft.html draft of C89/C90 Std. */ /* C11, 5.2.4.2.2p11, pp. 30 C99, 5.2.4.2.2p9, pp. 25 C89, 2.2.4.2 */ #include #ifndef FLT_RADIX #error "Mandatory macro FLT_RADIX is missing." #elif FLT_RADIX < 2 #error "Mandatory macro FLT_RADIX is invalid." #endif #ifndef FLT_MANT_DIG #error "Mandatory macro FLT_MANT_DIG is missing." #elif FLT_MANT_DIG < 2 #error "Mandatory macro FLT_MANT_DIG is invalid." #endif #ifndef DBL_MANT_DIG #error "Mandatory macro DBL_MANT_DIG is missing." #elif DBL_MANT_DIG < 2 #error "Mandatory macro DBL_MANT_DIG is invalid." #endif #ifndef LDBL_MANT_DIG #error "Mandatory macro LDBL_MANT_DIG is missing." #elif LDBL_MANT_DIG < 2 #error "Mandatory macro LDBL_MANT_DIG is invalid." #endif #if ((FLT_MANT_DIG > DBL_MANT_DIG) || (DBL_MANT_DIG > LDBL_MANT_DIG)) #error "Mandatory macros {FLT,DBL,LDBL}_MANT_DIG are invalid." #endif #if __STDC_VERSION__ >= 201112L || !defined(__STRICT_ANSI__) || __cplusplus >= 201703L #ifndef FLT_DECIMAL_DIG #error "Mandatory macro FLT_DECIMAL_DIG is missing." #elif FLT_DECIMAL_DIG < 6 #error "Mandatory macro FLT_DECIMAL_DIG is invalid." #endif #ifndef DBL_DECIMAL_DIG #error "Mandatory macro DBL_DECIMAL_DIG is missing." #elif DBL_DECIMAL_DIG < 10 #error "Mandatory macro DBL_DECIMAL_DIG is invalid." #endif #ifndef LDBL_DECIMAL_DIG #error "Mandatory macro LDBL_DECIMAL_DIG is missing." #elif LDBL_DECIMAL_DIG < 10 #error "Mandatory macro LDBL_DECIMAL_DIG is invalid." #endif #if ((FLT_DECIMAL_DIG > DBL_DECIMAL_DIG) || (DBL_DECIMAL_DIG > LDBL_DECIMAL_DIG)) #error "Mandatory macros {FLT,DBL,LDBL}_DECIMAL_DIG are invalid." #endif #ifndef FLT_HAS_SUBNORM #error "Mandatory macro FLT_HAS_SUBNORM is missing." #elif FLT_HAS_SUBNORM != __FLT_HAS_DENORM__ #error "Mandatory macro FLT_HAS_SUBNORM is invalid." #endif #ifndef LDBL_HAS_SUBNORM #error "Mandatory macro LDBL_HAS_SUBNORM is missing." #elif LDBL_HAS_SUBNORM != __LDBL_HAS_DENORM__ #error "Mandatory macro LDBL_HAS_SUBNORM is invalid." #endif #ifndef DBL_HAS_SUBNORM #error "Mandatory macro DBL_HAS_SUBNORM is missing." #elif DBL_HAS_SUBNORM != __DBL_HAS_DENORM__ #error "Mandatory macro DBL_HAS_SUBNORM is invalid." #endif #else #ifdef FLT_DECIMAL_DIG #error "Macro FLT_DECIMAL_DIG should not be defined." #endif #ifdef DBL_DECIMAL_DIG #error "Macro DBL_DECIMAL_DIG should not be defined." #endif #ifdef LDBL_DECIMAL_DIG #error "Macro LDBL_DECIMAL_DIG should not be defined." #endif #ifdef FLT_HAS_SUBNORM #error "Macro FLT_HAS_SUBNORM should not be defined." #endif #ifdef DBL_HAS_SUBNORM #error "Macro DBL_HAS_SUBNORM should not be defined." #endif #ifdef LDBL_HAS_SUBNORM #error "Macro LDBL_HAS_SUBNORM should not be defined." #endif #endif #if __STDC_VERSION__ >= 199901L || !defined(__STRICT_ANSI__) || __cplusplus >= 201103L #ifndef DECIMAL_DIG #error "Mandatory macro DECIMAL_DIG is missing." #elif DECIMAL_DIG < 10 #error "Mandatory macro DECIMAL_DIG is invalid." #endif #else #ifdef DECIMAL_DIG #error "Macro DECIMAL_DIG should not be defined." #endif #endif #ifndef FLT_DIG #error "Mandatory macro FLT_DIG is missing." #elif FLT_DIG < 6 #error "Mandatory macro FLT_DIG is invalid." #endif #ifndef DBL_DIG #error "Mandatory macro DBL_DIG is missing." #elif DBL_DIG < 10 #error "Mandatory macro DBL_DIG is invalid." #endif #ifndef LDBL_DIG #error "Mandatory macro LDBL_DIG is missing." #elif LDBL_DIG < 10 #error "Mandatory macro LDBL_DIG is invalid." #endif #if ((FLT_DIG > DBL_DIG) || (DBL_DIG > LDBL_DIG)) #error "Mandatory macros {FLT,DBL,LDBL}_DIG, are invalid." #endif #ifndef FLT_MIN_EXP #error "Mandatory macro FLT_MIN_EXP is missing." #elif FLT_MIN_EXP > -1 #error "Mandatory macro FLT_MIN_EXP is invalid." #endif #ifndef DBL_MIN_EXP #error "Mandatory macro DBL_MIN_EXP is missing." #elif DBL_MIN_EXP > -1 #error "Mandatory macro DBL_MIN_EXP is invalid." #endif #ifndef LDBL_MIN_EXP #error "Mandatory macro LDBL_MIN_EXP is missing." #elif LDBL_MIN_EXP > -1 #error "Mandatory macro LDBL_MIN_EXP is invalid." #endif #ifndef FLT_MIN_10_EXP #error "Mandatory macro FLT_MIN_10_EXP is missing." #elif FLT_MIN_10_EXP > -37 #error "Mandatory macro FLT_MIN_10_EXP is invalid." #endif #ifndef DBL_MIN_10_EXP #error "Mandatory macro DBL_MIN_10_EXP is missing." #elif DBL_MIN_10_EXP > -37 #error "Mandatory macro DBL_MIN_10_EXP is invalid." #endif #ifndef LDBL_MIN_10_EXP #error "Mandatory macro LDBL_MIN_10_EXP is missing." #elif LDBL_MIN_10_EXP > -37 #error "Mandatory macro LDBL_MIN_10_EXP is invalid." #endif #ifndef FLT_MAX_EXP #error "Mandatory macro FLT_MAX_EXP is missing." #elif FLT_MAX_EXP < 1 #error "Mandatory macro FLT_MAX_EXP is invalid." #endif #ifndef DBL_MAX_EXP #error "Mandatory macro DBL_MAX_EXP is missing." #elif DBL_MAX_EXP < 1 #error "Mandatory macro DBL_MAX_EXP is invalid." #endif #ifndef LDBL_MAX_EXP #error "Mandatory macro LDBL_MAX_EXP is missing." #elif LDBL_MAX_EXP < 1 #error "Mandatory macro LDBL_MAX_EXP is invalid." #endif #if ((FLT_MAX_EXP > DBL_MAX_EXP) || (DBL_MAX_EXP > LDBL_MAX_EXP)) #error "Mandatory macros {FLT,DBL,LDBL}_MAX_EXP are invalid." #endif #ifndef FLT_MAX_10_EXP #error "Mandatory macro FLT_MAX_10_EXP is missing." #elif FLT_MAX_10_EXP < 37 #error "Mandatory macro FLT_MAX_10_EXP is invalid." #endif #ifndef DBL_MAX_10_EXP #error "Mandatory macro DBL_MAX_10_EXP is missing." #elif DBL_MAX_10_EXP < 37 #error "Mandatory macro DBL_MAX_10_EXP is invalid." #endif #ifndef LDBL_MAX_10_EXP #error "Mandatory macro LDBL_MAX_10_EXP is missing." #elif LDBL_MAX_10_EXP < 37 #error "Mandatory macro LDBL_MAX_10_EXP is invalid." #endif #if ((FLT_MAX_10_EXP > DBL_MAX_10_EXP) || (DBL_MAX_10_EXP > LDBL_MAX_10_EXP)) #error "Mandatory macros {FLT,DBL,LDBL}_MAX_10_EXP are invalid." #endif /* Internal consistency checks */ _Static_assert(FLT_RADIX == __FLT_RADIX__, ""); _Static_assert(FLT_MANT_DIG == __FLT_MANT_DIG__, ""); _Static_assert(DBL_MANT_DIG == __DBL_MANT_DIG__, ""); _Static_assert(LDBL_MANT_DIG == __LDBL_MANT_DIG__, ""); #if __STDC_VERSION__ >= 201112L || !defined(__STRICT_ANSI__) || __cplusplus >= 201703L _Static_assert(FLT_DECIMAL_DIG == __FLT_DECIMAL_DIG__, ""); _Static_assert(DBL_DECIMAL_DIG == __DBL_DECIMAL_DIG__, ""); _Static_assert(LDBL_DECIMAL_DIG == __LDBL_DECIMAL_DIG__, ""); #endif #if __STDC_VERSION__ >= 199901L || !defined(__STRICT_ANSI__) || __cplusplus >= 201103L _Static_assert(DECIMAL_DIG == __DECIMAL_DIG__, ""); #endif _Static_assert(FLT_DIG == __FLT_DIG__, ""); _Static_assert(DBL_DIG == __DBL_DIG__, ""); _Static_assert(LDBL_DIG == __LDBL_DIG__, ""); _Static_assert(FLT_MIN_EXP == __FLT_MIN_EXP__, ""); _Static_assert(DBL_MIN_EXP == __DBL_MIN_EXP__, ""); _Static_assert(LDBL_MIN_EXP == __LDBL_MIN_EXP__, ""); _Static_assert(FLT_MIN_10_EXP == __FLT_MIN_10_EXP__, ""); _Static_assert(DBL_MIN_10_EXP == __DBL_MIN_10_EXP__, ""); _Static_assert(LDBL_MIN_10_EXP == __LDBL_MIN_10_EXP__, ""); _Static_assert(FLT_MAX_EXP == __FLT_MAX_EXP__, ""); _Static_assert(DBL_MAX_EXP == __DBL_MAX_EXP__, ""); _Static_assert(LDBL_MAX_EXP == __LDBL_MAX_EXP__, ""); _Static_assert(FLT_MAX_10_EXP == __FLT_MAX_10_EXP__, ""); _Static_assert(DBL_MAX_10_EXP == __DBL_MAX_10_EXP__, ""); _Static_assert(LDBL_MAX_10_EXP == __LDBL_MAX_10_EXP__, "");