From 079f270e1fd5c82ecafb0c473d4196af21a24111 Mon Sep 17 00:00:00 2001
From: "sgunderson@bigfoot.com" <>
Date: Sun, 3 Feb 2008 20:41:38 +0100
Subject: [PATCH] Make everything compile with -std=c89.

---
 qscale.c | 18 +++++++++++-------
 1 file changed, 11 insertions(+), 7 deletions(-)

diff --git a/qscale.c b/qscale.c
index 5c5ee09..ee70208 100644
--- a/qscale.c
+++ b/qscale.c
@@ -7,12 +7,16 @@
 
 #define CACHE_LINE_FACTOR 16
 
+#ifndef M_PI
+#define M_PI 3.14159265358979323846264
+#endif
+
 double sinc(double x)
 {
-	static const double cutoff = 1.220703668e-4;  // sqrt(sqrt(eps))
+	static const double cutoff = 1.220703668e-4;  /* sqrt(sqrt(eps)) */
 
 	if (abs(x) < cutoff) {
-		// For small |x|, use Taylor series instead
+		/* For small |x|, use Taylor series instead */
 		const double x2 = x * x;
 		const double x4 = x2 * x2;
 
@@ -62,10 +66,10 @@ void hscale(float *pix, unsigned char *npix, unsigned w, unsigned h, unsigned nw
 			end = w - 1;
 		}
 
-		// round up so we get a multiple of four for the SSE code
+		/* round up so we get a multiple of four for the SSE code */
 		int num = (end - start + 1);
 		if (num % 4 != 0) {
-			// prefer aligning it if possible
+			/* prefer aligning it if possible */
 			if (start % 4 != 0 && start % 4 <= num % 4) {
 				num += start % 4;
 				start -= start % 4;
@@ -105,7 +109,7 @@ void hscale(float *pix, unsigned char *npix, unsigned w, unsigned h, unsigned nw
 			float acc;
 			long tmp;
 			static const float low = 0.0, high = 255.0;
-			asm (
+			__asm__ (
 				"pxor %1, %1               \n"
 				"xor %2, %2                \n"
 				"0:                        \n"
@@ -223,7 +227,7 @@ void vscale(unsigned char *pix, float *npix, unsigned w, unsigned h, unsigned nh
 			 * xmm4: current filter coefficient
 			 * xmm5, xmm6, xmm7: scratchpad
 			 */
-			asm (
+			__asm__ (
 				/* clear */
 				"pxor %%xmm0, %%xmm0          \n"
 				"pxor %%xmm1, %%xmm1          \n"
@@ -453,7 +457,7 @@ int main(int argc, char **argv)
 		int i;
 
 		for (i = 0; i < max_lines; ++i) {
-			// simple edge extension
+			/* simple edge extension */
 			int yline = i + blocks*DCTSIZE*cinfo.comp_info[0].v_samp_factor;
 			if (yline > nh0 - 1)
 				yline = nh0 - 1;
-- 
2.39.2