1 #if !defined(PETSC_SKIP_COMPLEX) 2 #define PETSC_SKIP_COMPLEX 3 #endif 4 5 #include <petscsys.h> 6 /*@C 7 PetscIsNormalReal - Returns `PETSC_TRUE` if the input value satisfies `isnormal()` 8 9 Input Parameter: 10 . a - the `PetscReal` Value 11 12 Level: beginner 13 14 Developer Notes: 15 Uses the C99 standard `isnormal()` on systems where they exist. 16 17 Uses `isnormalq()` with `__float128` 18 19 Otherwise always returns true 20 21 .seealso: `PetscIsInfReal()`, `PetscIsNanReal()` 22 @*/ 23 #if defined(PETSC_USE_REAL___FLOAT128) || defined(PETSC_USE_REAL___FP16) PetscIsNormalReal(PetscReal a)24PetscBool PetscIsNormalReal(PetscReal a) 25 { 26 return PETSC_TRUE; 27 } 28 #elif defined(PETSC_HAVE_ISNORMAL) PetscIsNormalReal(PetscReal a)29PetscBool PetscIsNormalReal(PetscReal a) 30 { 31 return isnormal(a) ? PETSC_TRUE : PETSC_FALSE; 32 } 33 #else PetscIsNormalReal(PetscReal a)34PetscBool PetscIsNormalReal(PetscReal a) 35 { 36 return PETSC_TRUE; 37 } 38 #endif 39 40 #if defined(PETSC_HAVE_NO_FINITE_MATH_ONLY) 41 #define PETSC_FORCE_NO_FINITE_MATH_ONLY __attribute__((optimize("no-finite-math-only"))) 42 #else 43 #define PETSC_FORCE_NO_FINITE_MATH_ONLY 44 #endif 45 46 /*@C 47 PetscIsInfReal - Returns whether the `PetscReal` input is an infinity value. 48 49 Input Parameter: 50 . a - the floating point number 51 52 Level: beginner 53 54 Developer Notes: 55 Uses the C99 standard `isinf()` on systems where it exists. 56 57 Otherwise uses (a && a/2 == a), note that some optimizing compilers compile out this form, thus removing the check. 58 59 .seealso: `PetscIsNormalReal()`, `PetscIsNanReal()` 60 @*/ 61 #if defined(PETSC_USE_REAL___FLOAT128) PetscIsInfReal(PetscReal a)62PetscBool PetscIsInfReal(PetscReal a) 63 { 64 return isinfq(a) ? PETSC_TRUE : PETSC_FALSE; 65 } 66 #elif defined(PETSC_HAVE_ISINF) PetscIsInfReal(PetscReal a)67PETSC_FORCE_NO_FINITE_MATH_ONLY PetscBool PetscIsInfReal(PetscReal a) 68 { 69 return isinf(a) ? PETSC_TRUE : PETSC_FALSE; 70 } 71 #elif defined(PETSC_HAVE__FINITE) 72 #if defined(PETSC_HAVE_FLOAT_H) 73 #include <float.h> /* Microsoft Windows defines _finite() in float.h */ 74 #endif 75 #if defined(PETSC_HAVE_IEEEFP_H) 76 #include <ieeefp.h> /* Solaris prototypes these here */ 77 #endif PetscIsInfReal(PetscReal a)78PetscBool PetscIsInfReal(PetscReal a) 79 { 80 return !_finite(a) ? PETSC_TRUE : PETSC_FALSE; 81 } 82 #else PetscIsInfReal(PetscReal a)83PetscBool PetscIsInfReal(PetscReal a) 84 { 85 return (a && a / 2 == a) ? PETSC_TRUE : PETSC_FALSE; 86 } 87 #endif 88 89 /*@C 90 PetscIsNanReal - Returns whether the `PetscReal` input is a Not-a-Number (NaN) value. 91 92 Input Parameter: 93 . a - the floating point number 94 95 Level: beginner 96 97 Developer Notes: 98 Uses the C99 standard `isnan()` on systems where it exists. 99 100 Otherwise uses (a != a), note that some optimizing compilers compile 101 out this form, thus removing the check. 102 103 .seealso: `PetscIsNormalReal()`, `PetscIsInfReal()` 104 @*/ 105 #if defined(PETSC_USE_REAL___FLOAT128) PetscIsNanReal(PetscReal a)106PetscBool PetscIsNanReal(PetscReal a) 107 { 108 return isnanq(a) ? PETSC_TRUE : PETSC_FALSE; 109 } 110 #elif defined(PETSC_HAVE_ISNAN) PetscIsNanReal(PetscReal a)111PETSC_FORCE_NO_FINITE_MATH_ONLY PetscBool PetscIsNanReal(PetscReal a) 112 { 113 return isnan(a) ? PETSC_TRUE : PETSC_FALSE; 114 } 115 #elif defined(PETSC_HAVE__ISNAN) 116 #if defined(PETSC_HAVE_FLOAT_H) 117 #include <float.h> /* Microsoft Windows defines _isnan() in float.h */ 118 #endif 119 #if defined(PETSC_HAVE_IEEEFP_H) 120 #include <ieeefp.h> /* Solaris prototypes these here */ 121 #endif PetscIsNanReal(PetscReal a)122PetscBool PetscIsNanReal(PetscReal a) 123 { 124 return _isnan(a) ? PETSC_TRUE : PETSC_FALSE; 125 } 126 #else PetscIsNanReal(PetscReal a)127PetscBool PetscIsNanReal(PetscReal a) 128 { 129 return (a != a) ? PETSC_TRUE : PETSC_FALSE; 130 } 131 #endif 132