sexp sexp_read_bignum (sexp ctx, sexp in, sexp_uint_t init,
signed char sign, sexp_uint_t base) {
int c, digit;
sexp_gc_var1(res);
sexp_gc_preserve1(ctx, res);
res = sexp_make_bignum(ctx, SEXP_INIT_BIGNUM_SIZE);
sexp_bignum_sign(res) = sign;
sexp_bignum_data(res)[0] = init;
for (c=sexp_read_char(ctx, in); sexp_isxdigit(c); c=sexp_read_char(ctx, in)) {
digit = digit_value(c);
if ((digit < 0) || (digit >= base))
break;
res = sexp_bignum_fxmul(ctx, res, res, base, 0);
res = sexp_bignum_fxadd(ctx, res, digit);
}
if (c=='.' || c=='e' || c=='E') {
if (base != 10) {
res = sexp_read_error(ctx, "found non-base 10 float", SEXP_NULL, in);
} else {
if (c!='.') sexp_push_char(ctx, c, in); /* push the e back */
res = sexp_read_float_tail(ctx, in, sexp_bignum_to_double(res), (sign==-1));
}
#if SEXP_USE_RATIOS
} else if (c=='/') {
res = sexp_bignum_normalize(res);
res = sexp_make_ratio(ctx, res, SEXP_ONE);
sexp_ratio_denominator(res) = sexp_read_number(ctx, in, 10);
res = sexp_ratio_normalize(ctx, res, in);
#endif
#if SEXP_USE_COMPLEX
} else if (c=='i' || c=='i' || c=='+' || c=='-') {
sexp_push_char(ctx, c, in);
res = sexp_bignum_normalize(res);
res = sexp_read_complex_tail(ctx, in, res);
#endif
} else if ((c!=EOF) && ! sexp_is_separator(c)) {
res = sexp_read_error(ctx, "invalid numeric syntax",
sexp_make_character(c), in);
} else {
sexp_push_char(ctx, c, in);
}
sexp_gc_release1(ctx);
return sexp_bignum_normalize(res);
}
sexp sexp_write_bignum (sexp ctx, sexp a, sexp out, sexp_uint_t base) {
int i, str_len, lg_base = log2i(base);
char *data;
sexp_gc_var2(b, str);
sexp_gc_preserve2(ctx, b, str);
b = sexp_copy_bignum(ctx, NULL, a, 0);
sexp_bignum_sign(b) = 1;
i = str_len = (sexp_bignum_length(b)*sizeof(sexp_uint_t)*8 + lg_base - 1)
/ lg_base + 1;
str = sexp_make_string(ctx, sexp_make_fixnum(str_len),
sexp_make_character(' '));
data = sexp_string_data(str);
while (! sexp_bignum_zerop(b))
data[--i] = hex_digit(sexp_bignum_fxdiv(ctx, b, base, 0));
if (i == str_len)
data[--i] = '0';
else if (sexp_bignum_sign(a) == -1)
data[--i] = '-';
sexp_write_string(ctx, data + i, out);
sexp_gc_release2(ctx);
return SEXP_VOID;
}
_FN1(_I(SEXP_OPORT), _I(SEXP_STRING), "open-binary-output-file", 0, sexp_open_binary_output_file),
_FN1(SEXP_VOID, _I(SEXP_IPORT), "close-input-port", 0, sexp_close_port_op),
_FN1(SEXP_VOID, _I(SEXP_OPORT), "close-output-port", 0, sexp_close_port_op),
_FN0(_I(SEXP_ENV), "make-environment", 0, sexp_make_env_op),
_FN1(_I(SEXP_ENV), _I(SEXP_ENV), "env-parent", 0, sexp_env_parent_op),
_FN1(_I(SEXP_ENV), _I(SEXP_FIXNUM), "null-environment", 0, sexp_make_null_env_op),
_FN1(_I(SEXP_ENV), _I(SEXP_FIXNUM), "primitive-environment", 0, sexp_make_primitive_env_op),
_FN1(_I(SEXP_ENV), _I(SEXP_FIXNUM), "scheme-report-environment", 0, sexp_make_standard_env_op),
_FN2OPTP(_I(SEXP_OBJECT), _I(SEXP_OBJECT), _I(SEXP_ENV), "compile", (sexp)"interaction-environment", sexp_compile_op),
_FN2OPTP(_I(SEXP_OBJECT), _I(SEXP_OBJECT), _I(SEXP_ENV), "generate", (sexp)"interaction-environment", sexp_generate_op),
_FN2OPTP(SEXP_VOID, _I(SEXP_STRING), _I(SEXP_ENV), "%load", (sexp)"interaction-environment", sexp_load_op),
_FN4(SEXP_VOID, _I(SEXP_ENV), _I(SEXP_ENV), _I(SEXP_OBJECT), "%import", 0, sexp_env_import_op),
_FN2OPTP(SEXP_VOID, _I(SEXP_EXCEPTION), _I(SEXP_OPORT), "print-exception", (sexp)"current-error-port", sexp_print_exception_op),
_FN1OPTP(SEXP_VOID, _I(SEXP_OPORT), "print-stack-trace", (sexp)"current-error-port", sexp_stack_trace_op),
_FN3OPT(SEXP_VOID, _I(SEXP_OBJECT), _I(SEXP_OBJECT), _I(SEXP_OBJECT), "warn-undefs", SEXP_FALSE, sexp_warn_undefs_op),
_FN2OPT(_I(SEXP_STRING), _I(SEXP_FIXNUM), _I(SEXP_CHAR), "make-string", sexp_make_character(' '), sexp_make_string_op),
_FN2OPT(_I(SEXP_STRING), _I(SEXP_FIXNUM), _I(SEXP_FIXNUM), "make-bytevector", SEXP_ZERO, sexp_make_bytes_op),
_FN2OPT(_I(SEXP_NUMBER), _I(SEXP_STRING), _I(SEXP_FIXNUM), "string->number", SEXP_TEN, sexp_string_to_number_op),
_FN3(_I(SEXP_FIXNUM), _I(SEXP_STRING), _I(SEXP_STRING), _I(SEXP_BOOLEAN), "string-cmp", 0, sexp_string_cmp_op),
_FN1(_I(SEXP_SYMBOL), _I(SEXP_STRING), "string->symbol", 0, sexp_string_to_symbol_op),
_FN1(_I(SEXP_STRING), _I(SEXP_SYMBOL), "symbol->string", 0, sexp_symbol_to_string_op),
_FN2OPT(_I(SEXP_STRING), SEXP_NULL, _I(SEXP_STRING), "string-concatenate", SEXP_FALSE, sexp_string_concatenate_op),
_FN2(_I(SEXP_OBJECT), _I(SEXP_OBJECT), SEXP_NULL, "memq", 0, sexp_memq_op),
_FN2(_I(SEXP_OBJECT), _I(SEXP_OBJECT), SEXP_NULL, "assq", 0, sexp_assq_op),
_FN3(_I(SEXP_SYNCLO), _I(SEXP_ENV), SEXP_NULL, _I(SEXP_OBJECT), "make-syntactic-closure", 0, sexp_make_synclo_op),
_FN1(_I(SEXP_OBJECT), _I(SEXP_OBJECT), "strip-syntactic-closures", 0, sexp_strip_synclos),
_FN0(_I(SEXP_OPORT), "open-output-string", 0, sexp_open_output_string_op),
_FN1(_I(SEXP_IPORT), _I(SEXP_STRING), "open-input-string", 0, sexp_open_input_string_op),
_FN1(_I(SEXP_STRING), _I(SEXP_OPORT), "get-output-string", 0, sexp_get_output_string_op),
_FN2OPT(_I(SEXP_IPORT), _I(SEXP_FIXNUM), _I(SEXP_BOOLEAN), "open-input-file-descriptor", SEXP_FALSE, sexp_open_input_file_descriptor),
_FN2OPT(_I(SEXP_OPORT), _I(SEXP_FIXNUM), _I(SEXP_BOOLEAN), "open-output-file-descriptor", SEXP_FALSE, sexp_open_output_file_descriptor),
