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1 files changed, 381 insertions, 0 deletions

diff --git a/pkg/utilities/nttools/tunits/unstr.x b/pkg/utilities/nttools/tunits/unstr.x
new file mode 100644
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+++ b/pkg/utilities/nttools/tunits/unstr.x
@@ -0,0 +1,381 @@
+include "tunits.h"
+
+#* HISTORY *
+#* B.Simon	07-Jan-99	Original
+
+# ABREV_UNSTR -- Replace units string with its abbreviation
+
+procedure abrev_unstr (ab, instr, outstr, maxch)
+
+pointer	ab		# i: abbreviation hash descriptor
+char	instr[ARB]	# i: string to be abbreviated
+char	outstr[ARB]	# o: abbreviated string
+int	maxch		# i: max length of abbreviated string
+#--
+int	nc
+pointer	sp, temp
+
+int	gstrcpy(), find_abrev ()
+
+begin
+	if (find_abrev (ab, instr, outstr, maxch) == YES)
+	    return
+
+	call smark (sp)
+	call salloc (temp, LEN_UNIT, TY_CHAR)
+
+	nc = gstrcpy (instr, Memc[temp], LEN_UNIT)
+	if (nc == 1 || instr[nc] != 's') {
+	    call strcpy (instr, outstr, maxch)
+
+	} else {
+	    Memc[temp+nc-1] = EOS
+	    if (find_abrev (ab, Memc[temp], outstr, maxch) == NO)
+		call strcpy (Memc[temp], outstr, maxch)
+	}
+
+	call sfree (sp)
+end
+
+# COPY_UNSTR -- Copy a units descriptor
+
+pointer procedure copy_unstr (punit1)
+
+pointer	punit1		# i: units descriptor to be copied
+#--
+int	idx
+pointer	punit2
+
+begin
+	# Allocate structure to hold units
+
+	call calloc (punit2, LEN_TUNSTRUCT, TY_INT)
+
+	# Copy numeric factor
+
+	TUN_FACTOR(punit2) = TUN_FACTOR(punit1)
+
+	# Copy units and their powers
+
+	do idx = 1, MAXUNIT {
+	    if (TUN_UNPTR(punit1,idx) == NULL)
+		break
+
+	    call malloc (TUN_UNPTR(punit2,idx), LEN_UNIT, TY_CHAR)
+	    call strcpy (TUN_UNITS(punit1,idx), TUN_UNITS(punit2,idx), 
+			 LEN_UNIT)
+
+	    TUN_POWER(punit2,idx) = TUN_POWER(punit1,idx)
+	}
+
+	return (punit2)
+end
+# DIV_UNSTR -- Divide one set of units by another
+
+pointer procedure div_unstr (punit1, punit2)
+
+pointer	punit1		# i: descriptor for first set of units
+pointer	punit2		# i: descriptor for second set of units
+#--
+int	idx, jdx, kdx, power
+pointer	punit3
+
+int	find_unstr()
+
+begin
+	# Allocate structure to hold units
+
+	call calloc (punit3, LEN_TUNSTRUCT, TY_INT)
+
+	# Compute the new factor
+
+	TUN_FACTOR(punit3) = TUN_FACTOR(punit1) / TUN_FACTOR(punit2)
+
+	# Find units in both descriptors and subtract their powers
+
+	jdx = 1
+	do idx = 1, MAXUNIT {
+	    if (TUN_UNPTR(punit1,idx) == NULL)
+		break
+
+	    kdx = find_unstr (punit2, TUN_UNITS(punit1, idx))
+	    if (kdx == 0)
+		next
+
+	    power = TUN_POWER(punit1,idx) - TUN_POWER(punit2,kdx)
+	    if (power == 0)
+		next
+
+	    call malloc (TUN_UNPTR(punit3,jdx), LEN_UNIT, TY_CHAR)
+	    call strcpy (TUN_UNITS(punit1,idx), TUN_UNITS(punit3,jdx), 
+			 LEN_UNIT)
+
+	    TUN_POWER(punit3,jdx) = power
+	    jdx = jdx + 1
+	    
+	}
+
+	# Find units only in a single descriptor and add them to the
+	# new descriptor
+
+	do idx = 1, MAXUNIT {
+	    if (TUN_UNPTR(punit1,idx) == NULL)
+		break
+
+	    if (find_unstr (punit2, TUN_UNITS(punit1, idx)) == 0) {
+		call malloc (TUN_UNPTR(punit3,jdx), LEN_UNIT, TY_CHAR)
+		call strcpy (TUN_UNITS(punit1,idx), TUN_UNITS(punit3,jdx), 
+			     LEN_UNIT)
+
+		TUN_POWER(punit3,jdx) = TUN_POWER(punit1,idx)
+		jdx = jdx + 1
+	    }
+	}
+
+	do idx = 1, MAXUNIT {
+	    if (TUN_UNPTR(punit2,idx) == NULL)
+		break
+
+	    if (find_unstr (punit1, TUN_UNITS(punit2, idx)) == 0) {
+		call malloc (TUN_UNPTR(punit3,jdx), LEN_UNIT, TY_CHAR)
+		call strcpy (TUN_UNITS(punit2,idx), TUN_UNITS(punit3,jdx), 
+			     LEN_UNIT)
+
+		TUN_POWER(punit3,jdx) = - TUN_POWER(punit2,idx)
+		jdx = jdx + 1
+	    }
+	}
+
+	return (punit3)
+end
+
+# FIND_UNSTR -- Find location of units string in descriptor
+
+int procedure find_unstr (punit, units)
+
+pointer	punit		# i: units descriptor
+char	units[ARB]	# i: units string to search for
+#--
+int	idx
+bool	streq()
+
+begin
+	do idx = 1, MAXUNIT {
+	    if (TUN_UNPTR(punit,idx) == NULL)
+		break
+
+	    if (streq (TUN_UNITS(punit,idx), units))
+		return (idx)
+	}
+
+	return (0)
+end
+
+# FREE_UNSTR -- Release memory used by a units descriptor
+
+procedure free_unstr (punit)
+
+pointer	punit		# i: units descriptor
+#--
+int	idx
+
+begin
+	do idx = 1, MAXUNIT {
+	    if (TUN_UNPTR(punit,idx) == NULL)
+		break
+
+	    call mfree (TUN_UNPTR(punit,idx), TY_CHAR)
+	}
+
+	call mfree (punit, TY_INT)
+end
+
+# MUL_UNSTR -- Multiply two sets of units together
+
+pointer procedure mul_unstr (punit1, punit2)
+
+pointer	punit1		# i: descriptor for first set of units
+pointer	punit2		# i: descriptor for second set of units
+#--
+int	idx, jdx, kdx, power
+pointer	punit3
+
+int	find_unstr()
+
+begin
+	# Allocate structure to hold units
+
+	call calloc (punit3, LEN_TUNSTRUCT, TY_INT)
+
+	# Compute the new factor
+
+	TUN_FACTOR(punit3) = TUN_FACTOR(punit1) * TUN_FACTOR(punit2)
+
+	# Find units in both descriptors and add their powers
+
+	jdx = 1
+	do idx = 1, MAXUNIT {
+	    if (TUN_UNPTR(punit1,idx) == NULL)
+		break
+
+	    kdx = find_unstr (punit2, TUN_UNITS(punit1, idx))
+	    if (kdx == 0)
+		next
+
+	    power = TUN_POWER(punit1,idx) + TUN_POWER(punit2,kdx)
+	    if (power == 0)
+		next
+
+	    call malloc (TUN_UNPTR(punit3,jdx), LEN_UNIT, TY_CHAR)
+	    call strcpy (TUN_UNITS(punit1,idx), TUN_UNITS(punit3,jdx), 
+			 LEN_UNIT)
+
+	    TUN_POWER(punit3,jdx) = power
+	    jdx = jdx + 1
+	    
+	}
+
+	# Find units only in a single descriptor and add them to the
+	# new descriptor
+
+	do idx = 1, MAXUNIT {
+	    if (TUN_UNPTR(punit1,idx) == NULL)
+		break
+
+	    if (find_unstr (punit2, TUN_UNITS(punit1, idx)) == 0) {
+		call malloc (TUN_UNPTR(punit3,jdx), LEN_UNIT, TY_CHAR)
+		call strcpy (TUN_UNITS(punit1,idx), TUN_UNITS(punit3,jdx), 
+			     LEN_UNIT)
+
+		TUN_POWER(punit3,jdx) = TUN_POWER(punit1,idx)
+		jdx = jdx + 1
+	    }
+	}
+
+	do idx = 1, MAXUNIT {
+	    if (TUN_UNPTR(punit2,idx) == NULL)
+		break
+
+	    if (find_unstr (punit1, TUN_UNITS(punit2, idx)) == 0) {
+		call malloc (TUN_UNPTR(punit3,jdx), LEN_UNIT, TY_CHAR)
+		call strcpy (TUN_UNITS(punit2,idx), TUN_UNITS(punit3,jdx), 
+			     LEN_UNIT)
+
+		TUN_POWER(punit3,jdx) = TUN_POWER(punit2,idx)
+		jdx = jdx + 1
+	    }
+	}
+
+	return (punit3)
+end
+
+# NUM_UNSTR -- Convert a token to an integer
+
+int procedure num_unstr (value)
+
+char	value[ARB]	# i: string containing token value
+#--
+int	ic, nc, num
+
+int	ctoi()
+
+begin
+	ic = 1
+	nc = ctoi (value, ic, num)
+	return (num)
+end
+
+# POW_UNSTR -- Raise a set of units to an integer power
+
+pointer procedure pow_unstr (punit1, power)
+
+pointer	punit1		# i: units descriptor to be raised to power
+int	power
+#--
+int	idx
+pointer	punit2
+
+begin
+	# Allocate structure to hold units
+
+	call calloc (punit2, LEN_TUNSTRUCT, TY_INT)
+
+	# Compute the new factor
+
+	TUN_FACTOR(punit2) = TUN_FACTOR(punit1) ** power
+
+	# Find units in both descriptors and add their powers
+
+	if (power != 0) {
+	    for (idx = 1; idx <= MAXUNIT; idx = idx + 1) {
+		if (TUN_UNPTR(punit1,idx) == NULL)
+		    break
+
+		call malloc (TUN_UNPTR(punit2,idx), LEN_UNIT, TY_CHAR)
+		call strcpy (TUN_UNITS(punit1,idx), TUN_UNITS(punit2,idx), 
+			     LEN_UNIT)
+
+		TUN_POWER(punit2,idx) = TUN_POWER(punit1,idx) * power
+	    }
+	}
+
+	return (punit2)
+end
+
+# SET_UNSTR -- Make a new units description from a units string and its power
+
+pointer procedure set_unstr (ab, units, power)
+
+pointer	ab		# i: hash of units abbreviations
+char	units[ARB]	# i: units string
+int	power		# i: power of the units 
+#--
+pointer	punit
+
+begin
+	# Allocate structure to hold units
+
+	call calloc (punit, LEN_TUNSTRUCT, TY_INT)
+	call malloc (TUN_UNPTR(punit,1), LEN_UNIT, TY_CHAR)	
+
+	# Set the first slot in the structure  to hold the string
+	# and power passed to this procedure
+
+	TUN_FACTOR(punit) = 1.0
+	TUN_POWER(punit,1) = power
+	call abrev_unstr (ab, units, TUN_UNITS(punit,1), LEN_UNIT)
+
+	return (punit)
+end
+
+# STR_UNSTR -- Convert units structure into a string
+
+procedure str_unstr (punit, str, maxch)
+
+pointer	punit		# i: units descriptor
+char	str[ARB]	# o: string representation of units
+int	maxch		# i: max length of string
+#--
+int	ic, idx
+
+int	strlen(), gstrcpy(), itoc()
+
+begin
+	call sprintf (str, maxch, "%g")
+	call pargd (TUN_FACTOR(punit))
+
+	ic = strlen (str) + 1
+
+	do idx = 1, MAXUNIT {
+	    if (TUN_UNPTR(punit,idx) == NULL)
+		break
+
+	    ic = ic + gstrcpy ("*", str[ic], maxch-ic+1)
+	    ic = ic + gstrcpy (TUN_UNITS(punit,idx), str[ic], maxch+ic-1)
+
+	    if (TUN_POWER(punit,idx) != 1) {
+		ic = ic + gstrcpy ("^", str[ic], maxch-ic+1)
+		ic = ic + itoc (TUN_POWER(punit,idx), str[ic], maxch-ic+1)
+	    }
+	}
+end