[coreboot-gerrit] Patch set updated for coreboot: Makefile.inc: Add math macros

[Martin Roth (gaumless@gmail.com)]

Martin Roth (gaumless at gmail.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/10874

-gerrit

commit 93dbf7caf4b22cbd0505fe989fdddc9cffe48de7
Author: Martin Roth <gaumless at gmail.com>
Date:   Fri Jul 3 12:54:14 2015 -0600

    Makefile.inc: Add math macros
    
    Add macros to standardize math done in the Makefiles in a posix
    compliant manner.
    
    int-multiply takes an arbitrary list of values to multiply, the same as
    the int-addition macro.
    
    The other macros only work on two values at a time.
    
    Change-Id: I3b754b9bcde26f33edc4f945d5af3d5444f383c7
    Signed-off-by: Martin Roth <gaumless at gmail.com>
---
 Makefile.inc | 26 +++++++++++++++++++++-----
 1 file changed, 21 insertions(+), 5 deletions(-)

diff --git a/Makefile.inc b/Makefile.inc
index dbd5229..82836a8 100644
--- a/Makefile.inc
+++ b/Makefile.inc
@@ -72,15 +72,31 @@ $(foreach supported_arch,$(ARCH_SUPPORTED), \
 	    $(eval $(call define_class,rmodules_$(supported_arch),$(supported_arch))))
 
 #######################################################################
-# Helper functions for various file placement matters
+# Helper functions for math and various file placement matters.
+# macros work on all formats understood by printf(1)
+# values are space separated if using more than one value
 #
-# int-add: adds an arbitrary number of space-separated integers in
-#          all formats understood by printf(1)
-# int-align: align $1 to $2 units
-# file-size: returns the filesize of the given file
+# int-add:       adds an arbitrary length list of integers
+# int-subtract:  subtracts the the second of two integers from the first
+# int-multiply:  multiplies an arbitrary length list of integers
+# int-divide:    divides the first integer by the second
+# int-remainder: arithmetic remainder of the first number divided by the second
+# int-lt:        1 if the first value is less than the second.  0 otherwise
+# int-gt:        1 if the first values is greater than the second.  0 otherwise
+# int-eq:        1 if the two values are equal.  0 otherwise
+# int-align:     align $1 to $2 units
+# file-size:     returns the filesize of the given file
 _toint=$(shell printf "%d" $1)
 _int-add2=$(shell expr $(call _toint,$1) + $(call _toint,$2))
 int-add=$(if $(filter 1,$(words $1)),$(strip $1),$(call int-add,$(call _int-add2,$(word 1,$1),$(word 2,$1)) $(wordlist 3,$(words $1),$1)))
+int-subtract=$(if $(filter 1,$(words $1)),$(strip $1),$(shell expr $(call _toint,$(word 1,$1)) - $(call _toint,$(word 2,$1))))
+_int-multiply2=$(shell expr $(call _toint,$1) \* $(call _toint,$2))
+int-multiply=$(if $(filter 1,$(words $1)),$(strip $1),$(call int-multiply,$(call _int-multiply2,$(word 1,$1),$(word 2,$1)) $(wordlist 3,$(words $1),$1)))
+int-divide=$(if $(filter 1,$(words $1)),$(strip $1),$(shell expr $(call _toint,$(word 1,$1)) / $(call _toint,$(word 2,$1))))
+int-remainder=$(if $(filter 1,$(words $1)),$(strip $1),$(shell expr $(call _toint,$(word 1,$1)) % $(call _toint,$(word 2,$1))))
+int-lt=$(if $(filter 1,$(words $1)),$(strip $1),$(shell expr $(call _toint,$(word 1,$1)) < $(call _toint,$(word 2,$1))))
+int-gt=$(if $(filter 1,$(words $1)),$(strip $1),$(shell expr $(call _toint,$(word 1,$1)) > $(call _toint,$(word 2,$1))))
+int-eq=$(if $(filter 1,$(words $1)),$(strip $1),$(shell expr $(call _toint,$(word 1,$1)) = $(call _toint,$(word 2,$1))))
 int-align=$(shell A=$(call _toint,$1) B=$(call _toint,$2); expr $$A + \( \( $$B - \( $$A % $$B \) \) % $$B \) )
 file-size=$(shell cat $1 | wc -c)