mirror of https://github.com/lua/lua
small improvement in the support of 'float' as lua_Number
This commit is contained in:
Roberto Ierusalimschy
parent
0730a56d38
commit
181a837cac
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@ -1,5 +1,5 @@
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/*
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** $Id: llimits.h,v 1.100 2012/10/01 14:14:45 roberto Exp roberto $
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** $Id: llimits.h,v 1.101 2012/10/02 17:32:44 roberto Exp roberto $
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** Limits, basic types, and some other `installation-dependent' definitions
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** See Copyright Notice in lua.h
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*/
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@ -282,7 +282,7 @@ union luai_Cast { double l_d; LUA_INT32 l_p[2]; };
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#include <math.h>
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#define luai_hashnum(i,n) { int e; \
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n = frexp(n, &e) * (lua_Number)(INT_MAX - DBL_MAX_EXP); \
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n = l_tg(frexp)(n, &e) * (lua_Number)(INT_MAX - DBL_MAX_EXP); \
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lua_number2int(i, n); i += e; }
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#endif
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72
lmathlib.c
72
lmathlib.c
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@ -1,5 +1,5 @@
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/*
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** $Id: lmathlib.c,v 1.80 2011/07/05 12:49:35 roberto Exp roberto $
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** $Id: lmathlib.c,v 1.81 2012/05/18 17:47:53 roberto Exp roberto $
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** Standard mathematical library
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** See Copyright Notice in lua.h
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*/
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@ -17,106 +17,101 @@
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#include "lualib.h"
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/* macro 'l_tg' allows the addition of an 'l' or 'f' to all math operations */
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#if !defined(l_tg)
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#define l_tg(x) (x)
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#endif
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#undef PI
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#define PI (l_tg(3.1415926535897932384626433832795))
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#define RADIANS_PER_DEGREE (PI/180.0)
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#define PI ((lua_Number)(3.1415926535897932384626433832795))
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#define RADIANS_PER_DEGREE ((lua_Number)(PI/180.0))
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static int math_abs (lua_State *L) {
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lua_pushnumber(L, l_tg(fabs)(luaL_checknumber(L, 1)));
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lua_pushnumber(L, l_mathop(fabs)(luaL_checknumber(L, 1)));
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return 1;
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}
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static int math_sin (lua_State *L) {
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lua_pushnumber(L, l_tg(sin)(luaL_checknumber(L, 1)));
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lua_pushnumber(L, l_mathop(sin)(luaL_checknumber(L, 1)));
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return 1;
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}
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static int math_sinh (lua_State *L) {
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lua_pushnumber(L, l_tg(sinh)(luaL_checknumber(L, 1)));
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lua_pushnumber(L, l_mathop(sinh)(luaL_checknumber(L, 1)));
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return 1;
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}
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static int math_cos (lua_State *L) {
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lua_pushnumber(L, l_tg(cos)(luaL_checknumber(L, 1)));
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lua_pushnumber(L, l_mathop(cos)(luaL_checknumber(L, 1)));
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return 1;
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}
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static int math_cosh (lua_State *L) {
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lua_pushnumber(L, l_tg(cosh)(luaL_checknumber(L, 1)));
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lua_pushnumber(L, l_mathop(cosh)(luaL_checknumber(L, 1)));
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return 1;
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}
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static int math_tan (lua_State *L) {
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lua_pushnumber(L, l_tg(tan)(luaL_checknumber(L, 1)));
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lua_pushnumber(L, l_mathop(tan)(luaL_checknumber(L, 1)));
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return 1;
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}
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static int math_tanh (lua_State *L) {
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lua_pushnumber(L, l_tg(tanh)(luaL_checknumber(L, 1)));
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lua_pushnumber(L, l_mathop(tanh)(luaL_checknumber(L, 1)));
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return 1;
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}
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static int math_asin (lua_State *L) {
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lua_pushnumber(L, l_tg(asin)(luaL_checknumber(L, 1)));
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lua_pushnumber(L, l_mathop(asin)(luaL_checknumber(L, 1)));
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return 1;
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}
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static int math_acos (lua_State *L) {
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lua_pushnumber(L, l_tg(acos)(luaL_checknumber(L, 1)));
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lua_pushnumber(L, l_mathop(acos)(luaL_checknumber(L, 1)));
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return 1;
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}
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static int math_atan (lua_State *L) {
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lua_pushnumber(L, l_tg(atan)(luaL_checknumber(L, 1)));
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lua_pushnumber(L, l_mathop(atan)(luaL_checknumber(L, 1)));
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return 1;
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}
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static int math_atan2 (lua_State *L) {
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lua_pushnumber(L, l_tg(atan2)(luaL_checknumber(L, 1),
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lua_pushnumber(L, l_mathop(atan2)(luaL_checknumber(L, 1),
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luaL_checknumber(L, 2)));
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return 1;
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}
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static int math_ceil (lua_State *L) {
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lua_pushnumber(L, l_tg(ceil)(luaL_checknumber(L, 1)));
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lua_pushnumber(L, l_mathop(ceil)(luaL_checknumber(L, 1)));
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return 1;
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}
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static int math_floor (lua_State *L) {
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lua_pushnumber(L, l_tg(floor)(luaL_checknumber(L, 1)));
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lua_pushnumber(L, l_mathop(floor)(luaL_checknumber(L, 1)));
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return 1;
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}
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static int math_fmod (lua_State *L) {
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lua_pushnumber(L, l_tg(fmod)(luaL_checknumber(L, 1),
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lua_pushnumber(L, l_mathop(fmod)(luaL_checknumber(L, 1),
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luaL_checknumber(L, 2)));
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return 1;
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}
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static int math_modf (lua_State *L) {
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lua_Number ip;
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lua_Number fp = l_tg(modf)(luaL_checknumber(L, 1), &ip);
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lua_Number fp = l_mathop(modf)(luaL_checknumber(L, 1), &ip);
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lua_pushnumber(L, ip);
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lua_pushnumber(L, fp);
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return 2;
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}
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static int math_sqrt (lua_State *L) {
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lua_pushnumber(L, l_tg(sqrt)(luaL_checknumber(L, 1)));
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lua_pushnumber(L, l_mathop(sqrt)(luaL_checknumber(L, 1)));
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return 1;
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}
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static int math_pow (lua_State *L) {
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lua_pushnumber(L, l_tg(pow)(luaL_checknumber(L, 1),
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luaL_checknumber(L, 2)));
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lua_Number x = luaL_checknumber(L, 1);
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lua_Number y = luaL_checknumber(L, 2);
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lua_pushnumber(L, l_mathop(pow)(x, y));
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return 1;
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}
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@ -124,11 +119,11 @@ static int math_log (lua_State *L) {
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lua_Number x = luaL_checknumber(L, 1);
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lua_Number res;
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if (lua_isnoneornil(L, 2))
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res = l_tg(log)(x);
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res = l_mathop(log)(x);
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else {
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lua_Number base = luaL_checknumber(L, 2);
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if (base == 10.0) res = l_tg(log10)(x);
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else res = l_tg(log)(x)/l_tg(log)(base);
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if (base == (lua_Number)10.0) res = l_mathop(log10)(x);
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else res = l_mathop(log)(x)/l_mathop(log)(base);
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}
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lua_pushnumber(L, res);
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return 1;
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@ -136,13 +131,13 @@ static int math_log (lua_State *L) {
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#if defined(LUA_COMPAT_LOG10)
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static int math_log10 (lua_State *L) {
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lua_pushnumber(L, l_tg(log10)(luaL_checknumber(L, 1)));
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lua_pushnumber(L, l_mathop(log10)(luaL_checknumber(L, 1)));
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return 1;
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}
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#endif
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static int math_exp (lua_State *L) {
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lua_pushnumber(L, l_tg(exp)(luaL_checknumber(L, 1)));
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lua_pushnumber(L, l_mathop(exp)(luaL_checknumber(L, 1)));
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return 1;
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}
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@ -158,14 +153,15 @@ static int math_rad (lua_State *L) {
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static int math_frexp (lua_State *L) {
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int e;
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lua_pushnumber(L, l_tg(frexp)(luaL_checknumber(L, 1), &e));
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lua_pushnumber(L, l_mathop(frexp)(luaL_checknumber(L, 1), &e));
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lua_pushinteger(L, e);
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return 2;
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}
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static int math_ldexp (lua_State *L) {
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lua_pushnumber(L, l_tg(ldexp)(luaL_checknumber(L, 1),
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luaL_checkint(L, 2)));
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lua_Number x = luaL_checknumber(L, 1);
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lua_Number ep = luaL_checknumber(L, 2);
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lua_pushnumber(L, l_mathop(ldexp)(x, ep));
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return 1;
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}
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@ -210,15 +206,15 @@ static int math_random (lua_State *L) {
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}
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case 1: { /* only upper limit */
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lua_Number u = luaL_checknumber(L, 1);
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luaL_argcheck(L, 1.0 <= u, 1, "interval is empty");
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lua_pushnumber(L, l_tg(floor)(r*u) + 1.0); /* int in [1, u] */
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luaL_argcheck(L, (lua_Number)1.0 <= u, 1, "interval is empty");
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lua_pushnumber(L, l_mathop(floor)(r*u) + (lua_Number)(1.0)); /* [1, u] */
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break;
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}
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case 2: { /* lower and upper limits */
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lua_Number l = luaL_checknumber(L, 1);
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lua_Number u = luaL_checknumber(L, 2);
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luaL_argcheck(L, l <= u, 2, "interval is empty");
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lua_pushnumber(L, l_tg(floor)(r*(u-l+1)) + l); /* int in [l, u] */
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lua_pushnumber(L, l_mathop(floor)(r*(u-l+1)) + l); /* [l, u] */
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break;
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}
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default: return luaL_error(L, "wrong number of arguments");
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@ -1,5 +1,5 @@
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/*
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** $Id: lobject.c,v 2.55 2011/11/30 19:30:16 roberto Exp roberto $
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** $Id: lobject.c,v 2.56 2012/08/16 17:34:28 roberto Exp roberto $
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** Some generic functions over Lua objects
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** See Copyright Notice in lua.h
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*/
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@ -104,7 +104,7 @@ static int isneg (const char **s) {
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static lua_Number readhexa (const char **s, lua_Number r, int *count) {
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for (; lisxdigit(cast_uchar(**s)); (*s)++) { /* read integer part */
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r = (r * 16.0) + cast_num(luaO_hexavalue(cast_uchar(**s)));
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r = (r * cast_num(16.0)) + cast_num(luaO_hexavalue(cast_uchar(**s)));
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(*count)++;
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}
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return r;
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@ -149,7 +149,7 @@ static lua_Number lua_strx2number (const char *s, char **endptr) {
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*endptr = cast(char *, s); /* valid up to here */
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ret:
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if (neg) r = -r;
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return ldexp(r, e);
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return l_tg(ldexp)(r, e);
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}
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#endif
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12
luaconf.h
12
luaconf.h
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@ -1,5 +1,5 @@
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/*
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** $Id: luaconf.h,v 1.173 2012/07/13 14:54:14 roberto Exp roberto $
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** $Id: luaconf.h,v 1.174 2012/10/01 14:14:45 roberto Exp roberto $
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** Configuration file for Lua
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** See Copyright Notice in lua.h
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*/
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@ -405,6 +405,12 @@
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#define LUAI_MAXNUMBER2STR 32 /* 16 digits, sign, point, and \0 */
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/*
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@@ l_mathop allows the addition of an 'l' or 'f' to all math operations
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*/
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#define l_mathop(x) (x)
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/*
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@@ lua_str2number converts a decimal numeric string to a number.
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@@ lua_strx2number converts an hexadecimal numeric string to a number.
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@ -427,8 +433,8 @@
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/* the following operations need the math library */
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#if defined(lobject_c) || defined(lvm_c)
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#include <math.h>
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#define luai_nummod(L,a,b) ((a) - floor((a)/(b))*(b))
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#define luai_numpow(L,a,b) (pow(a,b))
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#define luai_nummod(L,a,b) ((a) - l_mathop(floor)((a)/(b))*(b))
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#define luai_numpow(L,a,b) (l_mathop(pow)(a,b))
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#endif
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/* these are quite standard operations */
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