diff options
Diffstat (limited to 'common/scummsys.h')
| -rw-r--r-- | common/scummsys.h | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/common/scummsys.h b/common/scummsys.h index 291de87dc9..3e9d5ef063 100644 --- a/common/scummsys.h +++ b/common/scummsys.h @@ -144,6 +144,63 @@ #endif #endif +// The following math constants are usually defined by the system math.h header, but +// they are not part of the ANSI C++ standards and so can NOT be relied upon to be +// present i.e. when -std=c++11 is passed to GCC, enabling strict ANSI compliance. +// As we rely on these being present, we define them if they are not set. + +#ifndef M_E + #define M_E 2.7182818284590452354 /* e */ +#endif + +#ifndef M_LOG2E + #define M_LOG2E 1.4426950408889634074 /* log_2 e */ +#endif + +#ifndef M_LOG10E + #define M_LOG10E 0.43429448190325182765 /* log_10 e */ +#endif + +#ifndef M_LN2 + #define M_LN2 0.69314718055994530942 /* log_e 2 */ +#endif + +#ifndef M_LN10 + #define M_LN10 2.30258509299404568402 /* log_e 10 */ +#endif + +#ifndef M_PI + #define M_PI 3.14159265358979323846 /* pi */ +#endif + +#ifndef M_PI_2 + #define M_PI_2 1.57079632679489661923 /* pi/2 */ +#endif + +#ifndef M_PI_4 + #define M_PI_4 0.78539816339744830962 /* pi/4 */ +#endif + +#ifndef M_1_PI + #define M_1_PI 0.31830988618379067154 /* 1/pi */ +#endif + +#ifndef M_2_PI + #define M_2_PI 0.63661977236758134308 /* 2/pi */ +#endif + +#ifndef M_2_SQRTPI + #define M_2_SQRTPI 1.12837916709551257390 /* 2/sqrt(pi) */ +#endif + +#ifndef M_SQRT2 + #define M_SQRT2 1.41421356237309504880 /* sqrt(2) */ +#endif + +#ifndef M_SQRT1_2 + #define M_SQRT1_2 0.70710678118654752440 /* 1/sqrt(2) */ +#endif + // Include our C++11 compatability header for pre-C++11 compilers. #if __cplusplus < 201103L #include "common/c++11-compat.h" |