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small "re-engineering" on parameter checking.

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correction of function "atan2".
This commit is contained in:
Roberto Ierusalimschy 1995-10-09 09:48:38 -03:00
parent 79ce619876
commit a47e8c7dd0
1 changed files with 42 additions and 145 deletions
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187
mathlib.c
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@ -3,7 +3,7 @@
** Mathematics library to LUA
*/
char *rcs_mathlib="$Id: mathlib.c,v 1.10 1995/10/02 17:03:33 roberto Exp roberto $";
char *rcs_mathlib="$Id: mathlib.c,v 1.11 1995/10/04 13:52:09 roberto Exp $";
#include <stdio.h> /* NULL */
#include <math.h>
@ -17,15 +17,25 @@ char *rcs_mathlib="$Id: mathlib.c,v 1.10 1995/10/02 17:03:33 roberto Exp roberto
#define TODEGREE(a) ((a)*180.0/PI)
#define TORAD(a) ((a)*PI/180.0)
static void str_error(char *funcname)
{
char buff[250];
sprintf(buff, "incorrect arguments to function `%s'", funcname);
lua_error(buff);
}
static float get_and_check_float (int numArg, char *funcname)
{
lua_Object o = lua_getparam(numArg);
if (!lua_isnumber(o))
str_error(funcname);
return lua_getnumber(o);
}
static void math_abs (void)
{
double d;
lua_Object o = lua_getparam (1);
if (o == LUA_NOOBJECT)
lua_error ("too few arguments to function `abs'");
if (!lua_isnumber(o))
lua_error ("incorrect arguments to function `abs'");
d = lua_getnumber(o);
double d = get_and_check_float(1, "abs");
if (d < 0) d = -d;
lua_pushnumber (d);
}
@ -33,13 +43,7 @@ static void math_abs (void)
static void math_sin (void)
{
double d;
lua_Object o = lua_getparam (1);
if (o == LUA_NOOBJECT)
lua_error ("too few arguments to function `sin'");
if (!lua_isnumber(o))
lua_error ("incorrect arguments to function `sin'");
d = lua_getnumber(o);
double d = get_and_check_float(1, "sin");
lua_pushnumber (sin(TORAD(d)));
}
@ -47,13 +51,7 @@ static void math_sin (void)
static void math_cos (void)
{
double d;
lua_Object o = lua_getparam (1);
if (o == LUA_NOOBJECT)
lua_error ("too few arguments to function `cos'");
if (!lua_isnumber(o))
lua_error ("incorrect arguments to function `cos'");
d = lua_getnumber(o);
double d = get_and_check_float(1, "cos");
lua_pushnumber (cos(TORAD(d)));
}
@ -61,117 +59,64 @@ static void math_cos (void)
static void math_tan (void)
{
double d;
lua_Object o = lua_getparam (1);
if (o == LUA_NOOBJECT)
lua_error ("too few arguments to function `tan'");
if (!lua_isnumber(o))
lua_error ("incorrect arguments to function `tan'");
d = lua_getnumber(o);
double d = get_and_check_float(1, "tan");
lua_pushnumber (tan(TORAD(d)));
}
static void math_asin (void)
{
double d;
lua_Object o = lua_getparam (1);
if (o == LUA_NOOBJECT)
lua_error ("too few arguments to function `asin'");
if (!lua_isnumber(o))
lua_error ("incorrect arguments to function `asin'");
d = lua_getnumber(o);
double d = get_and_check_float(1, "asin");
lua_pushnumber (TODEGREE(asin(d)));
}
static void math_acos (void)
{
double d;
lua_Object o = lua_getparam (1);
if (o == LUA_NOOBJECT)
lua_error ("too few arguments to function `acos'");
if (!lua_isnumber(o))
lua_error ("incorrect arguments to function `acos'");
d = lua_getnumber(o);
double d = get_and_check_float(1, "acos");
lua_pushnumber (TODEGREE(acos(d)));
}
static void math_atan (void)
{
double d;
lua_Object o = lua_getparam (1);
if (o == LUA_NOOBJECT)
lua_error ("too few arguments to function `atan'");
if (!lua_isnumber(o))
lua_error ("incorrect arguments to function `atan'");
d = lua_getnumber(o);
double d = get_and_check_float(1, "atan");
lua_pushnumber (TODEGREE(atan(d)));
}
static void math_atan2 (void)
{
int d1, d2;
lua_Object o1 = lua_getparam (1);
lua_Object o2 = lua_getparam (2);
if (!lua_isnumber(o1) || !lua_isnumber(o2))
lua_error ("incorrect arguments to function `atan2'");
d1 = (int) lua_getnumber(o1);
d2 = (int) lua_getnumber(o2);
double d1 = get_and_check_float(1, "atan2");
double d2 = get_and_check_float(2, "atan2");
lua_pushnumber (TODEGREE(atan2(d1, d2)));
}
static void math_ceil (void)
{
double d;
lua_Object o = lua_getparam (1);
if (o == LUA_NOOBJECT)
lua_error ("too few arguments to function `ceil'");
if (!lua_isnumber(o))
lua_error ("incorrect arguments to function `ceil'");
d = lua_getnumber(o);
double d = get_and_check_float(1, "ceil");
lua_pushnumber (ceil(d));
}
static void math_floor (void)
{
double d;
lua_Object o = lua_getparam (1);
if (o == LUA_NOOBJECT)
lua_error ("too few arguments to function `floor'");
if (!lua_isnumber(o))
lua_error ("incorrect arguments to function `floor'");
d = lua_getnumber(o);
double d = get_and_check_float(1, "floor");
lua_pushnumber (floor(d));
}
static void math_mod (void)
{
int d1, d2;
lua_Object o1 = lua_getparam (1);
lua_Object o2 = lua_getparam (2);
if (!lua_isnumber(o1) || !lua_isnumber(o2))
lua_error ("incorrect arguments to function `mod'");
d1 = (int) lua_getnumber(o1);
d2 = (int) lua_getnumber(o2);
int d1 = (int)get_and_check_float(1, "mod");
int d2 = (int)get_and_check_float(2, "mod");
lua_pushnumber (d1%d2);
}
static void math_sqrt (void)
{
double d;
lua_Object o = lua_getparam (1);
if (o == LUA_NOOBJECT)
lua_error ("too few arguments to function `sqrt'");
if (!lua_isnumber(o))
lua_error ("incorrect arguments to function `sqrt'");
d = lua_getnumber(o);
double d = get_and_check_float(1, "sqrt");
lua_pushnumber (sqrt(d));
}
@ -202,104 +147,56 @@ static void math_pow (void)
static void math_min (void)
{
int i=1;
double d, dmin;
lua_Object o;
if ((o = lua_getparam(i++)) == LUA_NOOBJECT)
lua_error ("too few arguments to function `min'");
if (!lua_isnumber(o))
lua_error ("incorrect arguments to function `min'");
dmin = lua_getnumber (o);
while ((o = lua_getparam(i++)) != LUA_NOOBJECT)
double dmin = get_and_check_float(i, "min");
while (lua_getparam(++i) != LUA_NOOBJECT)
{
if (!lua_isnumber(o))
lua_error ("incorrect arguments to function `min'");
d = lua_getnumber (o);
double d = get_and_check_float(i, "min");
if (d < dmin) dmin = d;
}
lua_pushnumber (dmin);
}
static void math_max (void)
{
int i=1;
double d, dmax;
lua_Object o;
if ((o = lua_getparam(i++)) == LUA_NOOBJECT)
lua_error ("too few arguments to function `max'");
if (!lua_isnumber(o))
lua_error ("incorrect arguments to function `max'");
dmax = lua_getnumber (o);
while ((o = lua_getparam(i++)) != LUA_NOOBJECT)
double dmax = get_and_check_float(i, "max");
while (lua_getparam(++i) != LUA_NOOBJECT)
{
if (!lua_isnumber(o))
lua_error ("incorrect arguments to function `max'");
d = lua_getnumber (o);
double d = get_and_check_float(i, "max");
if (d > dmax) dmax = d;
}
lua_pushnumber (dmax);
}
static void math_log (void)
{
double d;
lua_Object o = lua_getparam (1);
if (o == LUA_NOOBJECT)
lua_error ("too few arguments to function `log'");
if (!lua_isnumber(o))
lua_error ("incorrect arguments to function `log'");
d = lua_getnumber(o);
double d = get_and_check_float(1, "log");
lua_pushnumber (log(d));
}
static void math_log10 (void)
{
double d;
lua_Object o = lua_getparam (1);
if (o == LUA_NOOBJECT)
lua_error ("too few arguments to function `log10'");
if (!lua_isnumber(o))
lua_error ("incorrect arguments to function `log10'");
d = lua_getnumber(o);
double d = get_and_check_float(1, "log10");
lua_pushnumber (log10(d));
}
static void math_exp (void)
{
double d;
lua_Object o = lua_getparam (1);
if (o == LUA_NOOBJECT)
lua_error ("too few arguments to function `exp'");
if (!lua_isnumber(o))
lua_error ("incorrect arguments to function `exp'");
d = lua_getnumber(o);
double d = get_and_check_float(1, "exp");
lua_pushnumber (exp(d));
}
static void math_deg (void)
{
float d;
lua_Object o = lua_getparam (1);
if (o == LUA_NOOBJECT)
lua_error ("too few arguments to function `deg'");
if (!lua_isnumber(o))
lua_error ("incorrect arguments to function `deg'");
d = lua_getnumber(o);
float d = get_and_check_float(1, "deg");
lua_pushnumber (d*180./PI);
}
static void math_rad (void)
{
float d;
lua_Object o = lua_getparam (1);
if (o == LUA_NOOBJECT)
lua_error ("too few arguments to function `rad'");
if (!lua_isnumber(o))
lua_error ("incorrect arguments to function `rad'");
d = lua_getnumber(o);
float d = get_and_check_float(1, "rad");
lua_pushnumber (d/180.*PI);
}