From 48ca891887e8260be43ae641b35c4129fd4d2093 Mon Sep 17 00:00:00 2001
From: Mattias Andrée <maandree@kth.se>
Date: Sat, 15 Jul 2017 03:19:46 +0200
Subject: Generate USING_BINARY{32,64}
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Signed-off-by: Mattias Andrée <maandree@kth.se>
---
 src/blind-from-portable.c |  3 ---
 src/blind-to-portable.c   |  3 ---
 src/common.h              |  1 +
 src/generate-macros.c     | 22 ++++++++++++++++++++++
 4 files changed, 23 insertions(+), 6 deletions(-)
 create mode 100644 src/generate-macros.c

(limited to 'src')

diff --git a/src/blind-from-portable.c b/src/blind-from-portable.c
index b9cc08d..5510df5 100644
--- a/src/blind-from-portable.c
+++ b/src/blind-from-portable.c
@@ -3,9 +3,6 @@
 
 USAGE("[-s]")
 
-#define USING_BINARY32 0
-#define USING_BINARY64 0
-
 #define CONV(ITYPE, SITYPE, OTYPE, EXPONENT, HA2EXPONENT, FRACTION)\
 	do {\
 		static int cache_i = 0;\
diff --git a/src/blind-to-portable.c b/src/blind-to-portable.c
index 0a5a04e..39e3d58 100644
--- a/src/blind-to-portable.c
+++ b/src/blind-to-portable.c
@@ -9,9 +9,6 @@
 
 USAGE("[-s]")
 
-#define USING_BINARY32 0
-#define USING_BINARY64 0
-
 #define CONV(ITYPE, OTYPE, SOTYPE, EXPONENT, HA2EXPONENT, FRACTION)\
 	do {\
 		static int cache_i = 0;\
diff --git a/src/common.h b/src/common.h
index db2c66e..a32f1a3 100644
--- a/src/common.h
+++ b/src/common.h
@@ -17,6 +17,7 @@
 # pragma GCC diagnostic ignored "-Wfloat-conversion"
 #endif
 
+#include "../platform.h"
 #include "stream.h"
 #include "util.h"
 #include "video-math.h"
diff --git a/src/generate-macros.c b/src/generate-macros.c
new file mode 100644
index 0000000..ef87ad5
--- /dev/null
+++ b/src/generate-macros.c
@@ -0,0 +1,22 @@
+#include <stdint.h>
+#include <stdio.h>
+
+int
+main(void)
+{
+	if (sizeof(float) == 4) {
+		unsigned long int a, b;
+		a = (unsigned long int)*(uint32_t *)&(float){  (float)(1. / 12.) };
+		b = (unsigned long int)*(uint32_t *)&(float){ -(float)(1. / 12.) };
+		printf("#define USING_BINARY32 %i\n",
+		       a == 0x3daaaaabUL && b == 0xbdaaaaabUL);
+	}
+	if (sizeof(double) == 8) {
+		unsigned long long int a, b;
+		a = (unsigned long long int)*(uint64_t *)&(double){  1. / 12. };
+		b = (unsigned long long int)*(uint64_t *)&(double){ -1. / 12. };
+		printf("#define USING_BINARY64 %i\n",
+		       a == 0x3fb5555555555555ULL && b == 0xbfb5555555555555ULL);
+	}
+	return 0;
+}
-- 
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