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-rw-r--r--include/dspi/DSPI.h16
1 files changed, 16 insertions, 0 deletions
diff --git a/include/dspi/DSPI.h b/include/dspi/DSPI.h
new file mode 100644
index 0000000..d9e2acf
--- /dev/null
+++ b/include/dspi/DSPI.h
@@ -0,0 +1,16 @@
+#ifndef DSPI_h
+#define DSPI_h
+
+#define DSPImin(x,y) (((x)<(y)) ? (x) : (y))
+#define DSPImax(x,y) (((x)>(y)) ? (x) : (y))
+#define DSPIclip(min, x, max) (DSPImin(DSPImax((min), (x)), max))
+
+
+// test if floating point number is denormal
+#define DSPI_IS_DENORMAL(f) (((*(unsigned int *)&(f))&0x7f800000) == 0)
+
+// test if almost denormal, choose whichever is fastest
+#define DSPI_IS_ALMOST_DENORMAL(f) (((*(unsigned int *)&(f))&0x7f800000) < 0x08000000)
+//#define DSPI_IS_ALMOST_DENORMAL(f) (fabs(f) < 3.e-34)
+
+#endif