diff options
Diffstat (limited to 'src/lib/lua/lmathlib.c')
-rw-r--r-- | src/lib/lua/lmathlib.c | 305 |
1 files changed, 152 insertions, 153 deletions
diff --git a/src/lib/lua/lmathlib.c b/src/lib/lua/lmathlib.c index fe9fc5423d1..b672bdfc106 100644 --- a/src/lib/lua/lmathlib.c +++ b/src/lib/lua/lmathlib.c @@ -18,250 +18,250 @@ #undef PI -#define PI ((lua_Number)(3.1415926535897932384626433832795)) -#define RADIANS_PER_DEGREE ((lua_Number)(PI/180.0)) +#define PI ((lua_Number)(3.1415926535897932384626433832795)) +#define RADIANS_PER_DEGREE ((lua_Number)(PI/180.0)) static int math_abs (lua_State *L) { - lua_pushnumber(L, l_mathop(fabs)(luaL_checknumber(L, 1))); - return 1; + lua_pushnumber(L, l_mathop(fabs)(luaL_checknumber(L, 1))); + return 1; } static int math_sin (lua_State *L) { - lua_pushnumber(L, l_mathop(sin)(luaL_checknumber(L, 1))); - return 1; + lua_pushnumber(L, l_mathop(sin)(luaL_checknumber(L, 1))); + return 1; } static int math_sinh (lua_State *L) { - lua_pushnumber(L, l_mathop(sinh)(luaL_checknumber(L, 1))); - return 1; + lua_pushnumber(L, l_mathop(sinh)(luaL_checknumber(L, 1))); + return 1; } static int math_cos (lua_State *L) { - lua_pushnumber(L, l_mathop(cos)(luaL_checknumber(L, 1))); - return 1; + lua_pushnumber(L, l_mathop(cos)(luaL_checknumber(L, 1))); + return 1; } static int math_cosh (lua_State *L) { - lua_pushnumber(L, l_mathop(cosh)(luaL_checknumber(L, 1))); - return 1; + lua_pushnumber(L, l_mathop(cosh)(luaL_checknumber(L, 1))); + return 1; } static int math_tan (lua_State *L) { - lua_pushnumber(L, l_mathop(tan)(luaL_checknumber(L, 1))); - return 1; + lua_pushnumber(L, l_mathop(tan)(luaL_checknumber(L, 1))); + return 1; } static int math_tanh (lua_State *L) { - lua_pushnumber(L, l_mathop(tanh)(luaL_checknumber(L, 1))); - return 1; + lua_pushnumber(L, l_mathop(tanh)(luaL_checknumber(L, 1))); + return 1; } static int math_asin (lua_State *L) { - lua_pushnumber(L, l_mathop(asin)(luaL_checknumber(L, 1))); - return 1; + lua_pushnumber(L, l_mathop(asin)(luaL_checknumber(L, 1))); + return 1; } static int math_acos (lua_State *L) { - lua_pushnumber(L, l_mathop(acos)(luaL_checknumber(L, 1))); - return 1; + lua_pushnumber(L, l_mathop(acos)(luaL_checknumber(L, 1))); + return 1; } static int math_atan (lua_State *L) { - lua_pushnumber(L, l_mathop(atan)(luaL_checknumber(L, 1))); - return 1; + lua_pushnumber(L, l_mathop(atan)(luaL_checknumber(L, 1))); + return 1; } static int math_atan2 (lua_State *L) { - lua_pushnumber(L, l_mathop(atan2)(luaL_checknumber(L, 1), - luaL_checknumber(L, 2))); - return 1; + lua_pushnumber(L, l_mathop(atan2)(luaL_checknumber(L, 1), + luaL_checknumber(L, 2))); + return 1; } static int math_ceil (lua_State *L) { - lua_pushnumber(L, l_mathop(ceil)(luaL_checknumber(L, 1))); - return 1; + lua_pushnumber(L, l_mathop(ceil)(luaL_checknumber(L, 1))); + return 1; } static int math_floor (lua_State *L) { - lua_pushnumber(L, l_mathop(floor)(luaL_checknumber(L, 1))); - return 1; + lua_pushnumber(L, l_mathop(floor)(luaL_checknumber(L, 1))); + return 1; } static int math_fmod (lua_State *L) { - lua_pushnumber(L, l_mathop(fmod)(luaL_checknumber(L, 1), - luaL_checknumber(L, 2))); - return 1; + lua_pushnumber(L, l_mathop(fmod)(luaL_checknumber(L, 1), + luaL_checknumber(L, 2))); + return 1; } static int math_modf (lua_State *L) { - lua_Number ip; - lua_Number fp = l_mathop(modf)(luaL_checknumber(L, 1), &ip); - lua_pushnumber(L, ip); - lua_pushnumber(L, fp); - return 2; + lua_Number ip; + lua_Number fp = l_mathop(modf)(luaL_checknumber(L, 1), &ip); + lua_pushnumber(L, ip); + lua_pushnumber(L, fp); + return 2; } static int math_sqrt (lua_State *L) { - lua_pushnumber(L, l_mathop(sqrt)(luaL_checknumber(L, 1))); - return 1; + lua_pushnumber(L, l_mathop(sqrt)(luaL_checknumber(L, 1))); + return 1; } static int math_pow (lua_State *L) { - lua_Number x = luaL_checknumber(L, 1); - lua_Number y = luaL_checknumber(L, 2); - lua_pushnumber(L, l_mathop(pow)(x, y)); - return 1; + lua_Number x = luaL_checknumber(L, 1); + lua_Number y = luaL_checknumber(L, 2); + lua_pushnumber(L, l_mathop(pow)(x, y)); + return 1; } static int math_log (lua_State *L) { - lua_Number x = luaL_checknumber(L, 1); - lua_Number res; - if (lua_isnoneornil(L, 2)) - res = l_mathop(log)(x); - else { - lua_Number base = luaL_checknumber(L, 2); - if (base == (lua_Number)10.0) res = l_mathop(log10)(x); - else res = l_mathop(log)(x)/l_mathop(log)(base); - } - lua_pushnumber(L, res); - return 1; + lua_Number x = luaL_checknumber(L, 1); + lua_Number res; + if (lua_isnoneornil(L, 2)) + res = l_mathop(log)(x); + else { + lua_Number base = luaL_checknumber(L, 2); + if (base == (lua_Number)10.0) res = l_mathop(log10)(x); + else res = l_mathop(log)(x)/l_mathop(log)(base); + } + lua_pushnumber(L, res); + return 1; } #if defined(LUA_COMPAT_LOG10) static int math_log10 (lua_State *L) { - lua_pushnumber(L, l_mathop(log10)(luaL_checknumber(L, 1))); - return 1; + lua_pushnumber(L, l_mathop(log10)(luaL_checknumber(L, 1))); + return 1; } #endif static int math_exp (lua_State *L) { - lua_pushnumber(L, l_mathop(exp)(luaL_checknumber(L, 1))); - return 1; + lua_pushnumber(L, l_mathop(exp)(luaL_checknumber(L, 1))); + return 1; } static int math_deg (lua_State *L) { - lua_pushnumber(L, luaL_checknumber(L, 1)/RADIANS_PER_DEGREE); - return 1; + lua_pushnumber(L, luaL_checknumber(L, 1)/RADIANS_PER_DEGREE); + return 1; } static int math_rad (lua_State *L) { - lua_pushnumber(L, luaL_checknumber(L, 1)*RADIANS_PER_DEGREE); - return 1; + lua_pushnumber(L, luaL_checknumber(L, 1)*RADIANS_PER_DEGREE); + return 1; } static int math_frexp (lua_State *L) { - int e; - lua_pushnumber(L, l_mathop(frexp)(luaL_checknumber(L, 1), &e)); - lua_pushinteger(L, e); - return 2; + int e; + lua_pushnumber(L, l_mathop(frexp)(luaL_checknumber(L, 1), &e)); + lua_pushinteger(L, e); + return 2; } static int math_ldexp (lua_State *L) { - lua_Number x = luaL_checknumber(L, 1); - int ep = luaL_checkint(L, 2); - lua_pushnumber(L, l_mathop(ldexp)(x, ep)); - return 1; + lua_Number x = luaL_checknumber(L, 1); + int ep = luaL_checkint(L, 2); + lua_pushnumber(L, l_mathop(ldexp)(x, ep)); + return 1; } static int math_min (lua_State *L) { - int n = lua_gettop(L); /* number of arguments */ - lua_Number dmin = luaL_checknumber(L, 1); - int i; - for (i=2; i<=n; i++) { - lua_Number d = luaL_checknumber(L, i); - if (d < dmin) - dmin = d; - } - lua_pushnumber(L, dmin); - return 1; + int n = lua_gettop(L); /* number of arguments */ + lua_Number dmin = luaL_checknumber(L, 1); + int i; + for (i=2; i<=n; i++) { + lua_Number d = luaL_checknumber(L, i); + if (d < dmin) + dmin = d; + } + lua_pushnumber(L, dmin); + return 1; } static int math_max (lua_State *L) { - int n = lua_gettop(L); /* number of arguments */ - lua_Number dmax = luaL_checknumber(L, 1); - int i; - for (i=2; i<=n; i++) { - lua_Number d = luaL_checknumber(L, i); - if (d > dmax) - dmax = d; - } - lua_pushnumber(L, dmax); - return 1; + int n = lua_gettop(L); /* number of arguments */ + lua_Number dmax = luaL_checknumber(L, 1); + int i; + for (i=2; i<=n; i++) { + lua_Number d = luaL_checknumber(L, i); + if (d > dmax) + dmax = d; + } + lua_pushnumber(L, dmax); + return 1; } static int math_random (lua_State *L) { - /* the `%' avoids the (rare) case of r==1, and is needed also because on - some systems (SunOS!) `rand()' may return a value larger than RAND_MAX */ - lua_Number r = (lua_Number)(rand()%RAND_MAX) / (lua_Number)RAND_MAX; - switch (lua_gettop(L)) { /* check number of arguments */ - case 0: { /* no arguments */ - lua_pushnumber(L, r); /* Number between 0 and 1 */ - break; - } - case 1: { /* only upper limit */ - lua_Number u = luaL_checknumber(L, 1); - luaL_argcheck(L, (lua_Number)1.0 <= u, 1, "interval is empty"); - lua_pushnumber(L, l_mathop(floor)(r*u) + (lua_Number)(1.0)); /* [1, u] */ - break; - } - case 2: { /* lower and upper limits */ - lua_Number l = luaL_checknumber(L, 1); - lua_Number u = luaL_checknumber(L, 2); - luaL_argcheck(L, l <= u, 2, "interval is empty"); - lua_pushnumber(L, l_mathop(floor)(r*(u-l+1)) + l); /* [l, u] */ - break; - } - default: return luaL_error(L, "wrong number of arguments"); - } - return 1; + /* the `%' avoids the (rare) case of r==1, and is needed also because on + some systems (SunOS!) `rand()' may return a value larger than RAND_MAX */ + lua_Number r = (lua_Number)(rand()%RAND_MAX) / (lua_Number)RAND_MAX; + switch (lua_gettop(L)) { /* check number of arguments */ + case 0: { /* no arguments */ + lua_pushnumber(L, r); /* Number between 0 and 1 */ + break; + } + case 1: { /* only upper limit */ + lua_Number u = luaL_checknumber(L, 1); + luaL_argcheck(L, (lua_Number)1.0 <= u, 1, "interval is empty"); + lua_pushnumber(L, l_mathop(floor)(r*u) + (lua_Number)(1.0)); /* [1, u] */ + break; + } + case 2: { /* lower and upper limits */ + lua_Number l = luaL_checknumber(L, 1); + lua_Number u = luaL_checknumber(L, 2); + luaL_argcheck(L, l <= u, 2, "interval is empty"); + lua_pushnumber(L, l_mathop(floor)(r*(u-l+1)) + l); /* [l, u] */ + break; + } + default: return luaL_error(L, "wrong number of arguments"); + } + return 1; } static int math_randomseed (lua_State *L) { - srand(luaL_checkunsigned(L, 1)); - (void)rand(); /* discard first value to avoid undesirable correlations */ - return 0; + srand(luaL_checkunsigned(L, 1)); + (void)rand(); /* discard first value to avoid undesirable correlations */ + return 0; } static const luaL_Reg mathlib[] = { - {"abs", math_abs}, - {"acos", math_acos}, - {"asin", math_asin}, - {"atan2", math_atan2}, - {"atan", math_atan}, - {"ceil", math_ceil}, - {"cosh", math_cosh}, - {"cos", math_cos}, - {"deg", math_deg}, - {"exp", math_exp}, - {"floor", math_floor}, - {"fmod", math_fmod}, - {"frexp", math_frexp}, - {"ldexp", math_ldexp}, + {"abs", math_abs}, + {"acos", math_acos}, + {"asin", math_asin}, + {"atan2", math_atan2}, + {"atan", math_atan}, + {"ceil", math_ceil}, + {"cosh", math_cosh}, + {"cos", math_cos}, + {"deg", math_deg}, + {"exp", math_exp}, + {"floor", math_floor}, + {"fmod", math_fmod}, + {"frexp", math_frexp}, + {"ldexp", math_ldexp}, #if defined(LUA_COMPAT_LOG10) - {"log10", math_log10}, + {"log10", math_log10}, #endif - {"log", math_log}, - {"max", math_max}, - {"min", math_min}, - {"modf", math_modf}, - {"pow", math_pow}, - {"rad", math_rad}, - {"random", math_random}, - {"randomseed", math_randomseed}, - {"sinh", math_sinh}, - {"sin", math_sin}, - {"sqrt", math_sqrt}, - {"tanh", math_tanh}, - {"tan", math_tan}, - {NULL, NULL} + {"log", math_log}, + {"max", math_max}, + {"min", math_min}, + {"modf", math_modf}, + {"pow", math_pow}, + {"rad", math_rad}, + {"random", math_random}, + {"randomseed", math_randomseed}, + {"sinh", math_sinh}, + {"sin", math_sin}, + {"sqrt", math_sqrt}, + {"tanh", math_tanh}, + {"tan", math_tan}, + {NULL, NULL} }; @@ -269,11 +269,10 @@ static const luaL_Reg mathlib[] = { ** Open math library */ LUAMOD_API int luaopen_math (lua_State *L) { - luaL_newlib(L, mathlib); - lua_pushnumber(L, PI); - lua_setfield(L, -2, "pi"); - lua_pushnumber(L, HUGE_VAL); - lua_setfield(L, -2, "huge"); - return 1; + luaL_newlib(L, mathlib); + lua_pushnumber(L, PI); + lua_setfield(L, -2, "pi"); + lua_pushnumber(L, HUGE_VAL); + lua_setfield(L, -2, "huge"); + return 1; } - |