diff options
Diffstat (limited to 'indra/llmath/llmath.h')
| -rw-r--r-- | indra/llmath/llmath.h | 62 |
1 files changed, 31 insertions, 31 deletions
diff --git a/indra/llmath/llmath.h b/indra/llmath/llmath.h index f425b590e4..4e8fc56de0 100644 --- a/indra/llmath/llmath.h +++ b/indra/llmath/llmath.h @@ -59,34 +59,34 @@ #define tanf(x) ((F32)tan((F64)(x))) #endif*/ -const F32 GRAVITY = -9.8f; +constexpr F32 GRAVITY = -9.8f; // mathematical constants -const F32 F_PI = 3.1415926535897932384626433832795f; -const F32 F_TWO_PI = 6.283185307179586476925286766559f; -const F32 F_PI_BY_TWO = 1.5707963267948966192313216916398f; -const F32 F_SQRT_TWO_PI = 2.506628274631000502415765284811f; -const F32 F_E = 2.71828182845904523536f; -const F32 F_SQRT2 = 1.4142135623730950488016887242097f; -const F32 F_SQRT3 = 1.73205080756888288657986402541f; -const F32 OO_SQRT2 = 0.7071067811865475244008443621049f; -const F32 OO_SQRT3 = 0.577350269189625764509f; -const F32 DEG_TO_RAD = 0.017453292519943295769236907684886f; -const F32 RAD_TO_DEG = 57.295779513082320876798154814105f; -const F32 F_APPROXIMATELY_ZERO = 0.00001f; -const F32 F_LN10 = 2.3025850929940456840179914546844f; -const F32 OO_LN10 = 0.43429448190325182765112891891661; -const F32 F_LN2 = 0.69314718056f; -const F32 OO_LN2 = 1.4426950408889634073599246810019f; - -const F32 F_ALMOST_ZERO = 0.0001f; -const F32 F_ALMOST_ONE = 1.0f - F_ALMOST_ZERO; - -const F32 GIMBAL_THRESHOLD = 0.000436f; // sets the gimballock threshold 0.025 away from +/-90 degrees +constexpr F32 F_PI = 3.1415926535897932384626433832795f; +constexpr F32 F_TWO_PI = 6.283185307179586476925286766559f; +constexpr F32 F_PI_BY_TWO = 1.5707963267948966192313216916398f; +constexpr F32 F_SQRT_TWO_PI = 2.506628274631000502415765284811f; +constexpr F32 F_E = 2.71828182845904523536f; +constexpr F32 F_SQRT2 = 1.4142135623730950488016887242097f; +constexpr F32 F_SQRT3 = 1.73205080756888288657986402541f; +constexpr F32 OO_SQRT2 = 0.7071067811865475244008443621049f; +constexpr F32 OO_SQRT3 = 0.577350269189625764509f; +constexpr F32 DEG_TO_RAD = 0.017453292519943295769236907684886f; +constexpr F32 RAD_TO_DEG = 57.295779513082320876798154814105f; +constexpr F32 F_APPROXIMATELY_ZERO = 0.00001f; +constexpr F32 F_LN10 = 2.3025850929940456840179914546844f; +constexpr F32 OO_LN10 = 0.43429448190325182765112891891661; +constexpr F32 F_LN2 = 0.69314718056f; +constexpr F32 OO_LN2 = 1.4426950408889634073599246810019f; + +constexpr F32 F_ALMOST_ZERO = 0.0001f; +constexpr F32 F_ALMOST_ONE = 1.0f - F_ALMOST_ZERO; + +constexpr F32 GIMBAL_THRESHOLD = 0.000436f; // sets the gimballock threshold 0.025 away from +/-90 degrees // formula: GIMBAL_THRESHOLD = sin(DEG_TO_RAD * gimbal_threshold_angle); // BUG: Eliminate in favor of F_APPROXIMATELY_ZERO above? -const F32 FP_MAG_THRESHOLD = 0.0000001f; +constexpr F32 FP_MAG_THRESHOLD = 0.0000001f; // TODO: Replace with logic like is_approx_equal inline bool is_approx_zero( F32 f ) { return (-F_APPROXIMATELY_ZERO < f) && (f < F_APPROXIMATELY_ZERO); } @@ -123,13 +123,13 @@ inline bool is_zero(F32 x) inline bool is_approx_equal(F32 x, F32 y) { - const S32 COMPARE_MANTISSA_UP_TO_BIT = 0x02; + constexpr S32 COMPARE_MANTISSA_UP_TO_BIT = 0x02; return (std::abs((S32) ((U32&)x - (U32&)y) ) < COMPARE_MANTISSA_UP_TO_BIT); } inline bool is_approx_equal(F64 x, F64 y) { - const S64 COMPARE_MANTISSA_UP_TO_BIT = 0x02; + constexpr S64 COMPARE_MANTISSA_UP_TO_BIT = 0x02; return (std::abs((S32) ((U64&)x - (U64&)y) ) < COMPARE_MANTISSA_UP_TO_BIT); } @@ -272,8 +272,8 @@ inline F64 ll_round( F64 val, F64 nearest ) // peak error = -31.4 dB // RMS error = -28.1 dB -const F32 FAST_MAG_ALPHA = 0.960433870103f; -const F32 FAST_MAG_BETA = 0.397824734759f; +constexpr F32 FAST_MAG_ALPHA = 0.960433870103f; +constexpr F32 FAST_MAG_BETA = 0.397824734759f; // these provide minimum RMS error // @@ -281,8 +281,8 @@ const F32 FAST_MAG_BETA = 0.397824734759f; // peak error = -32.6 dB // RMS error = -25.7 dB // -//const F32 FAST_MAG_ALPHA = 0.948059448969f; -//const F32 FAST_MAG_BETA = 0.392699081699f; +//constexpr F32 FAST_MAG_ALPHA = 0.948059448969f; +//constexpr F32 FAST_MAG_BETA = 0.392699081699f; inline F32 fastMagnitude(F32 a, F32 b) { @@ -299,8 +299,8 @@ inline F32 fastMagnitude(F32 a, F32 b) // // Culled from www.stereopsis.com/FPU.html -const F64 LL_DOUBLE_TO_FIX_MAGIC = 68719476736.0*1.5; //2^36 * 1.5, (52-_shiftamt=36) uses limited precisicion to floor -const S32 LL_SHIFT_AMOUNT = 16; //16.16 fixed point representation, +constexpr F64 LL_DOUBLE_TO_FIX_MAGIC = 68719476736.0*1.5; //2^36 * 1.5, (52-_shiftamt=36) uses limited precisicion to floor +constexpr S32 LL_SHIFT_AMOUNT = 16; //16.16 fixed point representation, // Endian dependent code #ifdef LL_LITTLE_ENDIAN |