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authorVladimir Azarov <avm@intermediate-node.net>2024-10-01 15:47:05 +0200
committerVladimir Azarov <avm@intermediate-node.net>2024-10-01 15:47:05 +0200
commit4abab5ad6c8465a7528ccdd5f49367da05f78bbd (patch)
treeebf009bf1376a5a223a915bc27cbbd791a1316bc /src/math/i386/fmodf.c
Initial version
Diffstat (limited to 'src/math/i386/fmodf.c')
-rw-r--r--src/math/i386/fmodf.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/src/math/i386/fmodf.c b/src/math/i386/fmodf.c
new file mode 100644
index 0000000..90b56ab
--- /dev/null
+++ b/src/math/i386/fmodf.c
@@ -0,0 +1,10 @@
+#include <math.h>
+
+float fmodf(float x, float y)
+{
+ unsigned short fpsr;
+ // fprem does not introduce excess precision into x
+ do __asm__ ("fprem; fnstsw %%ax" : "+t"(x), "=a"(fpsr) : "u"(y));
+ while (fpsr & 0x400);
+ return x;
+}