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add math library functions sqrt, exp, log, sin, cos, tan, asin, acos, atan

This commit is contained in:
Jeff Bezanson 2017-08-19 14:54:32 -04:00
parent bc646bd7a1
commit 643c304125
1 changed files with 34 additions and 0 deletions
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34
builtins.c
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@ -13,6 +13,7 @@
#include <sys/time.h>
#include <sys/stat.h>
#include <errno.h>
#include <math.h>
#include "llt.h"
#include "flisp.h"
#include "random.h"
@ -433,6 +434,29 @@ static value_t fl_randf(value_t *args, u_int32_t nargs)
return mk_float(rand_float());
}
#define MATH_FUNC_1ARG(name) \
static value_t fl_##name(value_t *args, u_int32_t nargs) \
{ \
argcount(#name, nargs, 1); \
if (iscprim(args[0])) { \
cprim_t *cp = (cprim_t*)ptr(args[0]); \
numerictype_t nt = cp_numtype(cp); \
if (nt == T_FLOAT) \
return mk_float(name##f(*(float*)cp_data(cp))); \
} \
return mk_double(name(todouble(args[0], #name))); \
}
MATH_FUNC_1ARG(sqrt)
MATH_FUNC_1ARG(exp)
MATH_FUNC_1ARG(log)
MATH_FUNC_1ARG(sin)
MATH_FUNC_1ARG(cos)
MATH_FUNC_1ARG(tan)
MATH_FUNC_1ARG(asin)
MATH_FUNC_1ARG(acos)
MATH_FUNC_1ARG(atan)
extern void stringfuncs_init(void);
extern void table_init(void);
extern void iostream_init(void);
@ -469,6 +493,16 @@ static builtinspec_t builtin_info[] = {
{ "rand.double", fl_randd },
{ "rand.float", fl_randf },
{ "sqrt", fl_sqrt },
{ "exp", fl_exp },
{ "log", fl_log },
{ "sin", fl_sin },
{ "cos", fl_cos },
{ "tan", fl_tan },
{ "asin", fl_asin },
{ "acos", fl_acos },
{ "atan", fl_atan },
{ "path.cwd", fl_path_cwd },
{ "path.exists?", fl_path_exists },