add ieee sources and Makefile based on the example given in the origi…

…nal ieeelib posting

Makefile

@@ -0,0 +1,75 @@
+GEN_DIR := gen
+SRC_DIR := src
+
+CC      := gcc
+C_FLAGS := -c -O2 -msoft-float 
+INCLUDE :=
+AR      := ar
+OUTPUT  := libsoft-fp.a
+
+FILES     := sfieeelib dfieeelib sfdfcvt
+SRC_FILES := $(patsubst %, $(GEN_DIR)/%.c, $(FILES))
+OBJ_FILES := $(patsubst %, $(GEN_DIR)/%.o, $(FILES))
+
+
+.PHONY: default all clean
+
+default: $(OUTPUT)
+all: default
+
+
+$(OUTPUT): $(OBJ_FILES)
+	$(AR) -crv $(OUTPUT) $(OBJ_FILES)
+
+%.o : %.c
+	$(CC) $(C_FLAGS) $(INCLUDE) $< -o $@
+
+# Compile SFmode routines
+$(GEN_DIR)/sfieeelib.c: $(SRC_DIR)/ieeelib.c
+	echo '#define COMPUTE_TYPE unsigned long'       >$(GEN_DIR)/sfieeelib.c
+	echo '#define COMPUTE_STYPE signed long'        >>$(GEN_DIR)/sfieeelib.c
+	echo '#define COMPUTE_TYPE_BITS 32'             >>$(GEN_DIR)/sfieeelib.c
+	echo '#define MANTISSA_NWORDS 1'                >>$(GEN_DIR)/sfieeelib.c
+	echo '#define MANTISSA_BITS 24'                 >>$(GEN_DIR)/sfieeelib.c
+	echo '#define EXP_BITS 8'                       >>$(GEN_DIR)/sfieeelib.c
+	echo '#define FLOATING_TYPE float'              >>$(GEN_DIR)/sfieeelib.c
+	echo '#define SFmode'                           >>$(GEN_DIR)/sfieeelib.c
+	echo '#define MSB_IMPLICIT true'                >>$(GEN_DIR)/sfieeelib.c
+	echo '#define FLOAT_WORDS_BIG_ENDIAN'           >>$(GEN_DIR)/sfieeelib.c
+	cat $(SRC_DIR)/ieeelib.c                        >>$(GEN_DIR)/sfieeelib.c
+
+# Compile DFmode routines
+$(GEN_DIR)/dfieeelib.c: $(SRC_DIR)/ieeelib.c
+	echo '#define COMPUTE_TYPE unsigned long'       >$(GEN_DIR)/dfieeelib.c
+	echo '#define COMPUTE_STYPE signed long'        >>$(GEN_DIR)/dfieeelib.c
+	echo '#define COMPUTE_TYPE_BITS 32'             >>$(GEN_DIR)/dfieeelib.c
+	echo '#define MANTISSA_NWORDS 2'                >>$(GEN_DIR)/dfieeelib.c
+	echo '#define MANTISSA_BITS 53'                 >>$(GEN_DIR)/dfieeelib.c
+	echo '#define EXP_BITS 11'                      >>$(GEN_DIR)/dfieeelib.c
+	echo '#define FLOATING_TYPE double'             >>$(GEN_DIR)/dfieeelib.c
+	echo '#define DFmode'                           >>$(GEN_DIR)/dfieeelib.c
+	echo '#define MSB_IMPLICIT true'                >>$(GEN_DIR)/dfieeelib.c
+	echo '#define FLOAT_WORDS_BIG_ENDIAN'           >>$(GEN_DIR)/dfieeelib.c
+	cat $(SRC_DIR)/ieeelib.c                        >>$(GEN_DIR)/dfieeelib.c
+
+# Compile conversion routines between DFmode and SFmode
+$(GEN_DIR)/sfdfcvt.c: $(SRC_DIR)/ieeecvt.c
+	echo '#define S_FLOATING_TYPE float'            >$(GEN_DIR)/sfdfcvt.c
+	echo '#define S_MANTISSA_BITS 24'               >>$(GEN_DIR)/sfdfcvt.c
+	echo '#define S_EXP_BITS 8'                     >>$(GEN_DIR)/sfdfcvt.c
+	echo '#define B_FLOATING_TYPE double'           >>$(GEN_DIR)/sfdfcvt.c
+	echo '#define B_MANTISSA_BITS 53'               >>$(GEN_DIR)/sfdfcvt.c
+	echo '#define B_EXP_BITS 11'                    >>$(GEN_DIR)/sfdfcvt.c
+	echo '#define INTEGER_TYPE unsigned long int'   >>$(GEN_DIR)/sfdfcvt.c
+	echo '#define INTEGER_STYPE signed long int'    >>$(GEN_DIR)/sfdfcvt.c
+	echo '#define INTEGER_TYPE_BITS 32'             >>$(GEN_DIR)/sfdfcvt.c
+	echo '#define S_MANTISSA_NWORDS 1'              >>$(GEN_DIR)/sfdfcvt.c
+	echo '#define B_MANTISSA_NWORDS 2'              >>$(GEN_DIR)/sfdfcvt.c
+	echo '#define FLOAT_WORDS_BIG_ENDIAN'           >>$(GEN_DIR)/sfdfcvt.c
+	echo '#define extend_fname __extendsfdf2'       >>$(GEN_DIR)/sfdfcvt.c
+	echo '#define truncate_fname __truncdfsf2'      >>$(GEN_DIR)/sfdfcvt.c
+	cat $(SRC_DIR)/ieeecvt.c                        >>$(GEN_DIR)/sfdfcvt.c
+
+
+clean:
+	rm -f $(GEN_DIR)/*.o $(GEN_DIR)/*.c $(OUTPUT) 

gen/.gitignore

@@ -0,0 +1,5 @@
+# Ignore everything in this directory
+*
+# Except this file
+!.gitignore
+