Hi,
It looks like tcc cannot parse binary floating number currently. This
patch fixes
that and also add some test cases for this problem.
Any comment?
Sincerely,
lee
From 5a76c5d2f39ad087b5153d458503caabb871c513 Mon Sep 17 00:00:00 2001
From: Lee Duhem <lee.du...@gmail.com>
Date: Mon, 15 Dec 2014 16:32:08 +0800
Subject: [PATCH] Fix parsing of binary floating point number
* tccpp.c (parse_number): `shift' should be 1 while parsing binary
floating point number.
* tests/tests2/70_floating_point_literals.c: New test cases for
floating point number parsing.
---
tccpp.c | 2 +-
tests/tests2/70_floating_point_literals.c | 77 ++++++++++++++++++++++++++
tests/tests2/70_floating_point_literals.expect | 53 ++++++++++++++++++
tests/tests2/Makefile | 3 +-
4 files changed, 133 insertions(+), 2 deletions(-)
create mode 100644 tests/tests2/70_floating_point_literals.c
create mode 100644 tests/tests2/70_floating_point_literals.expect
diff --git a/tccpp.c b/tccpp.c
index 0cea7cf..4c7cf80 100644
--- a/tccpp.c
+++ b/tccpp.c
@@ -1874,7 +1874,7 @@ static void parse_number(const char *p)
if (b == 16)
shift = 4;
else
- shift = 2;
+ shift = 1;
bn_zero(bn);
q = token_buf;
while (1) {
diff --git a/tests/tests2/70_floating_point_literals.c b/tests/tests2/70_floating_point_literals.c
new file mode 100644
index 0000000..012fb4f
--- /dev/null
+++ b/tests/tests2/70_floating_point_literals.c
@@ -0,0 +1,77 @@
+#include <stdio.h>
+
+int main()
+{
+ /* decimal floating constant */
+ float fa0 = .123f;
+ float fa1 = .123E12F;
+ float fa2 = .123e-12f;
+ float fa3 = .123e+12f;
+ printf("%f\n%f\n%f\n%f\n\n", fa0, fa1, fa2, fa3);
+
+ float fb0 = 123.123f;
+ float fb1 = 123.123E12F;
+ float fb2 = 123.123e-12f;
+ float fb3 = 123.123e+12f;
+ printf("%f\n%f\n%f\n%f\n\n", fb0, fb1, fb2, fb3);
+
+ float fc0 = 123.f;
+ float fc1 = 123.E12F;
+ float fc2 = 123.e-12f;
+ float fc3 = 123.e+12f;
+ printf("%f\n%f\n%f\n%f\n\n", fc0, fc1, fc2, fc3);
+
+ float fd0 = 123E12F;
+ float fd1 = 123e-12f;
+ float fd2 = 123e+12f;
+ printf("%f\n%f\n%f\n\n", fd0, fd1, fd2);
+ printf("\n");
+
+ /* hexadecimal floating constant */
+ double da0 = 0X.1ACP12;
+ double da1 = 0x.1acp-12;
+ double da2 = 0x.1acp+12;
+ printf("%f\n%f\n%f\n\n", da0, da1, da2);
+
+ double db0 = 0X1AC.BDP12;
+ double db1 = 0x1ac.bdp-12;
+ double db2 = 0x1ac.dbp+12;
+ printf("%f\n%f\n%f\n\n", db0, db1, db2);
+
+ double dc0 = 0X1AC.P12;
+ double dc1 = 0x1ac.p-12;
+ double dc2 = 0x1ac.p+12;
+ printf("%f\n%f\n%f\n\n", dc0, dc1, dc2);
+
+ double dd0 = 0X1ACP12;
+ double dd1 = 0x1acp-12;
+ double dd2 = 0x1acp+12;
+ printf("%f\n%f\n%f\n\n", dd0, dd1, dd2);
+ printf("\n");
+
+#ifdef __TINYC__
+ /* TCC extension
+ binary floating constant */
+ long double la0 = 0B.110101100P12L;
+ long double la1 = 0b.110101100p-12l;
+ long double la2 = 0b.110101100p+12l;
+ printf("%Lf\n%Lf\n%Lf\n\n", la0, la1, la2);
+
+ long double lb0 = 0B110101100.10111101P12L;
+ long double lb1 = 0b110101100.10111101p-12l;
+ long double lb2 = 0b110101100.10111101p+12l;
+ printf("%Lf\n%Lf\n%Lf\n\n", lb0, lb1, lb2);
+
+ long double lc0 = 0B110101100.P12L;
+ long double lc1 = 0b110101100.p-12l;
+ long double lc2 = 0b110101100.p+12l;
+ printf("%Lf\n%Lf\n%Lf\n\n", lc0, lc1, lc2);
+
+ long double ld0 = 0B110101100P12L;
+ long double ld1 = 0b110101100p-12l;
+ long double ld2 = 0b110101100p+12l;
+ printf("%Lf\n%Lf\n%Lf\n\n", ld0, ld1, ld2);
+#endif
+
+ return 0;
+}
diff --git a/tests/tests2/70_floating_point_literals.expect b/tests/tests2/70_floating_point_literals.expect
new file mode 100644
index 0000000..7eb1efb
--- /dev/null
+++ b/tests/tests2/70_floating_point_literals.expect
@@ -0,0 +1,53 @@
+0.123000
+122999996416.000000
+0.000000
+122999996416.000000
+
+123.123001
+123122997002240.000000
+0.000000
+123122997002240.000000
+
+123.000000
+123000003231744.000000
+0.000000
+123000003231744.000000
+
+123000003231744.000000
+0.000000
+123000003231744.000000
+
+
+428.000000
+0.000026
+428.000000
+
+1756112.000000
+0.104672
+1756592.000000
+
+1753088.000000
+0.104492
+1753088.000000
+
+1753088.000000
+0.104492
+1753088.000000
+
+
+3424.000000
+0.000204
+3424.000000
+
+1756112.000000
+0.104672
+1756112.000000
+
+1753088.000000
+0.104492
+1753088.000000
+
+1753088.000000
+0.104492
+1753088.000000
+
diff --git a/tests/tests2/Makefile b/tests/tests2/Makefile
index 924f03c..8e11f2c 100644
--- a/tests/tests2/Makefile
+++ b/tests/tests2/Makefile
@@ -88,7 +88,8 @@ TESTS = \
66_macro_concat_end.test \
67_macro_concat.test \
68_macro_param_list_err_1.test \
- 69_macro_param_list_err_2.test
+ 69_macro_param_list_err_2.test \
+ 70_floating_point_literals.test
# 34_array_assignment.test -- array assignment is not in C standard
--
1.9.3
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