[gnumeric] Add PS to CONVERT

[Andreas J. Guelzow <guelzow src gnome org>]

commit a0c1facf1444ac238f4e80aea1dbcfe1b908b8db
Author: Andreas J. Guelzow <aguelzow pyrshep ca>
Date:   Mon Jun 15 22:31:21 2015 -0600

    Add PS to CONVERT
    
    2015-06-15  Andreas J. Guelzow <aguelzow pyrshep ca>
    
        * functions.c (gnumeric_convert): add PS
        (help_convert): add PS

 plugins/fn-eng/ChangeLog   |    5 +++++
 plugins/fn-eng/functions.c |    3 +++
 2 files changed, 8 insertions(+), 0 deletions(-)
---
diff --git a/plugins/fn-eng/ChangeLog b/plugins/fn-eng/ChangeLog
index dac8abb..3825424 100644
--- a/plugins/fn-eng/ChangeLog
+++ b/plugins/fn-eng/ChangeLog
@@ -1,3 +1,8 @@
+2015-06-15  Andreas J. Guelzow <aguelzow pyrshep ca>
+
+       * functions.c (gnumeric_convert): add PS
+       (help_convert): add PS
+
 2015-04-16  Morten Welinder <terra gnome org>
 
        * Release 1.12.22
diff --git a/plugins/fn-eng/functions.c b/plugins/fn-eng/functions.c
index 3c9fcf3..b78e69d 100644
--- a/plugins/fn-eng/functions.c
+++ b/plugins/fn-eng/functions.c
@@ -691,6 +691,7 @@ static GnmFuncHelp const help_convert[] = {
                                        "\t'BTU'  \t\tBTU\n\n"
                                        "Power:\n"
                                        "\t'HP'   \t\tHorsepower\n"
+                                       "\t'PS'   \t\tPferdestärke\n"
                                        "\t'W'    \t\tWatt\n\n"
                                        "Magnetism:\n"
                                        "\t'T'    \t\tTesla\n"
@@ -837,6 +838,7 @@ gnumeric_convert (GnmFuncEvalInfo *ei, GnmValue const * const *argv)
 
        /* Power constants */
 #define one_HP_to_W     745.701
+#define one_PS_to_W     735.49875
 
        /* Energy constants */
 #define one_J_to_e      9999995.193
@@ -946,6 +948,7 @@ gnumeric_convert (GnmFuncEvalInfo *ei, GnmValue const * const *argv)
 
        static const eng_convert_unit_t power_units[] = {
                { "HP",   1.0 },
+               { "PS",   one_HP_to_W/one_PS_to_W },
                { "W",    one_HP_to_W },
                { NULL,   0.0 }
        };